US428023A - Casing for flexible shafts - Google Patents
Casing for flexible shaftsDownload PDFInfo
- Publication number
- US428023A US428023AUS428023DAUS428023AUS 428023 AUS428023 AUS 428023AUS 428023D AUS428023D AUS 428023DAUS 428023 AUS428023 AUS 428023A
- Authority
- US
- United States
- Prior art keywords
- casing
- sections
- shaft
- envelope
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005452bendingMethods0.000description4
- 241000251539Vertebrata <Metazoa>Species0.000description3
- 238000000926separation methodMethods0.000description3
- 238000005219brazingMethods0.000description2
- 238000010276constructionMethods0.000description2
- 238000005476solderingMethods0.000description2
- 239000010985leatherSubstances0.000description1
- 239000000463materialSubstances0.000description1
- 238000000034methodMethods0.000description1
Images
Classifications
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/40—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by means of coilable or bendable legs or spiral shaped legs
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/06—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements with guiding sheathing, tube or box
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/26—Construction of guiding-sheathings or guiding-tubes
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Definitions
- the object of my inventionis to provide a flexible shaft with a flexible outer casing or covering of such character as will restrict the bending of the shaft beyond a predetermined limit, and this object I attain by providing the flexible shaft with what may be termed a vertebrate casing or envelope, the joints, sections, or vertebrae of: which. are so constructed that they will bind one upon another when the flexible shaft has reached the predetermined limit of llexion, and will thus prevent any further bending of the shaft in that direction.
- Figure lis a side view rcpresentin a flexible shaft having a casing or envelope constructed in ac cordance with my invention.
- Fig. 2is a section, on a larger scale, showing an end portion of the flexible shaft, its l.ltl'l(l-] ')l000 and fittings, and a number of the sections of the vertebrate casing or envelope for the shaft; and
- Figs. 3 to 0are views illustrating various methods of constructing the sections or vertebra: of said casing or envelope.
- Arepresents part of the flexible shaft, consisting 'of a number of spiral coils wound tightly one upon another, as usual, a being the power-receiving fitting connected to one end of said shaft, and l) the stem or spindle to be rotated, or through which the power is to be imparted to any suitable implement.
- At each end of the shaftare non-rotating sleeves or ferrules B, and these ferrules must be connected by a flexible tube forming a casing or envelope :for inclosing the flexible shaft, restricting the bending of the same, and preventing in jury to the shaft or to the person handling the tool or implement which is being driven.
- this flexible casing or envelopeconsists of a single coil of special wire and an outer covering of leather, rubber, or equivalent material; but the objection to a casing or envelope of this character is that it soon becomes more flexible than the shaft itself, and consequently does not restrict the bending of the shaft to a greater extent than is compatible with its economical and safe working.
- each of the sections or vertebra(l fittin g into one and onto the other of the adjoining sections, and having such play as will permit the flexion of the shaft and its casing or envelope to any desired predetermined extent, the sec tions or vertebrze binding one upon another when this degree of flexion has been reached, so that further movement of the shaft in that direction is prevented.
- each of the sections or vertebrze of the casing or envelopeconsists of a shell having two cylindrical portions, one of which is of somewhat greater diameter th an the other, so that the small cylindrical portion of one shell may enter the large cylindrical portion of an adjoining shell, the small portion havin at the end an external rib z, and the large portion having at the end an internal.
- ribin, so that when the sect-ions or vertebrae are once fitted together longitudinal separation of the vertebrae is effectually prevented by these ribs, but the vertebrae can yield upon each other to an extent permitted by the contact of the rib i with the rib m and with the internal shoulder 11, formed where the internal diameter of the shell is reduced.
- the rib mmay be independent of the shell of the vertebra, and may be in the form of a split ring to be slipped over the small end of an adjoining vertebra and screwed into place after the latter has been inserted; or the rib m may be secured in place by soldering, brazing, or other means, or it may be of an elastic character, and may be sprung into a groove formed in the large end of the shell, as shown in Fig. 4-, for instance; or the rib i may be detachable, as in Fig.
- the ribbeing in the form of a split ring, which can be first contracted, so to be passed through the ribbed end of the shell, and then allowed to expand inside the same for the reception of the small cylindrical end of thenext section, to which it may be secured by brazing, soldering, or otherwise, access being had to it through the open end of the preceding section; or both ribs i and m may be detachable, in which case neither of them need be split.
- Detachable ribsare not absolutely essential to the proper carrying out of the invention, as the ribs may be integral with each shell, and the small portion of the latter maybe slotted longitudinally, so as to form a series of ribbed fingers, which may be sprung together, so as to permit the ribs 1 to pass the ribs m of the adjoining section, and may then be allowed to expand, so as to confine the two sections together, an instance of this construction being shown in Fig. 6; or the large portion of the shell with its internal rib may be slotted in the same manner, as shown in Fig. 7, the spring-fingers being expanded to permit the ribbed end of the adjoining section to pass the same.
- Fig. 9showing a construction of this character in which the entering end of one section has radial pins 10, adapted to slots to, cut in the covering end of the adjoining section, so as to permit the desired flexion of one section upon the other without; permitting the separation of the sections, and a like pin and slot may be used in connection with the other forms of joint shown when it is desired to prevent turning of the sections independently of each other.
- the within-described casingor envelope for a flexible shaftconsisting of a series of articulated sect-ions or vertebral, each consisting of a tube having one end of larger diameter than the other, the small end of one tube entering the large end of the adjoin ng tube, and the enlarged end of each section having an internal rib and the small end having an external rib, whereby when the sections are fitted together stops are formed for preventing separation of the sections and limiting the fiexion of the casing, substantiallyas specified.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Description
(No Model.)
P. SGHOFP. CASING FOR FLEXIBLE SHAFTS.
WIT/VJ n33 UNITED STATES PATENT ()EFICE.
FREDERIC SCI'IYOFF, OF PHILADELPHIA, PENNSYLVANIA.
CASING FOR FLEXIBLE SHAFTS.
SPECIFICATION forming part of Letters Patent No. 428,023, dated May 13, 1890.
Application filed October 14,1889. Serial No. 827,021. (No model.)
To all. whom it may concern:
Be it known that I, 'FREDEEIQ Borrow, a citizen of the United States, residing at Philadelphia, Pennsylvania, have in vented certain Improvements in Casings for Flexible Shafts, of which the following is a specification.
The object of my invention is to provide a flexible shaft with a flexible outer casing or covering of such character as will restrict the bending of the shaft beyond a predetermined limit, and this object I attain by providing the flexible shaft with what may be termed a vertebrate casing or envelope, the joints, sections, or vertebrae of: which. are so constructed that they will bind one upon another when the flexible shaft has reached the predetermined limit of llexion, and will thus prevent any further bending of the shaft in that direction.
In the .iccompanying drawings, Figure l is a side view rcpresentin a flexible shaft having a casing or envelope constructed in ac cordance with my invention. Fig. 2 is a section, on a larger scale, showing an end portion of the flexible shaft, its l.ltl'l(l-] ')l000 and fittings, and a number of the sections of the vertebrate casing or envelope for the shaft; and Figs. 3 to 0 are views illustrating various methods of constructing the sections or vertebra: of said casing or envelope.
A represents part of the flexible shaft, consisting 'of a number of spiral coils wound tightly one upon another, as usual, a being the power-receiving fitting connected to one end of said shaft, and l) the stem or spindle to be rotated, or through which the power is to be imparted to any suitable implement. At each end of the shaft are non-rotating sleeves or ferrules B, and these ferrules must be connected by a flexible tube forming a casing or envelope :for inclosing the flexible shaft, restricting the bending of the same, and preventing in jury to the shaft or to the person handling the tool or implement which is being driven. Usually this flexible casing or envelope consists of a single coil of special wire and an outer covering of leather, rubber, or equivalent material; but the objection to a casing or envelope of this character is that it soon becomes more flexible than the shaft itself, and consequently does not restrict the bending of the shaft to a greater extent than is compatible with its economical and safe working. In carrying out my invention, therefore, I make the casing or envelope for the flexible shaft in vertebrate form, each of the sections or vertebra: (l fittin g into one and onto the other of the adjoining sections, and having such play as will permit the flexion of the shaft and its casing or envelope to any desired predetermined extent, the sec tions or vertebrze binding one upon another when this degree of flexion has been reached, so that further movement of the shaft in that direction is prevented.
As shown in Fig. 3, each of the sections or vertebrze of the casing or envelope consists of a shell having two cylindrical portions, one of which is of somewhat greater diameter th an the other, so that the small cylindrical portion of one shell may enter the large cylindrical portion of an adjoining shell, the small portion havin at the end an external rib z, and the large portion having at the end an internal. rib in, so that when the sect-ions or vertebrae are once fitted together longitudinal separation of the vertebrae is effectually prevented by these ribs, but the vertebrae can yield upon each other to an extent permitted by the contact of the rib i with the rib m and with the internal shoulder 11, formed where the internal diameter of the shell is reduced.
In order to permit the fittin g of the vertebra) together, the rib m may be independent of the shell of the vertebra, and may be in the form of a split ring to be slipped over the small end of an adjoining vertebra and screwed into place after the latter has been inserted; or the rib m may be secured in place by soldering, brazing, or other means, or it may be of an elastic character, and may be sprung into a groove formed in the large end of the shell, as shown in Fig. 4-, for instance; or the rib i may be detachable, as in Fig. 5, if desired, the rib being in the form of a split ring, which can be first contracted, so to be passed through the ribbed end of the shell, and then allowed to expand inside the same for the reception of the small cylindrical end of thenext section, to which it may be secured by brazing, soldering, or otherwise, access being had to it through the open end of the preceding section; or both ribs i and m may be detachable, in which case neither of them need be split. Detachable ribs, however, are not absolutely essential to the proper carrying out of the invention, as the ribs may be integral with each shell, and the small portion of the latter maybe slotted longitudinally, so as to form a series of ribbed fingers, which may be sprung together, so as to permit the ribs 1 to pass the ribs m of the adjoining section, and may then be allowed to expand, so as to confine the two sections together, an instance of this construction being shown in Fig. 6; or the large portion of the shell with its internal rib may be slotted in the same manner, as shown in Fig. 7, the spring-fingers being expanded to permit the ribbed end of the adjoining section to pass the same. In this case, however, it is advisable to provide an outer contracting ring wt, preferably screwed onto the large end of the shell, as in Fig. 8, so as to properly contract the internal rib and prevent the same from yielding to the strains to which it is subjected in the subsequent use of the tool.
\Vhen it; is not desired that the sections or vertebrfe of the casing or envelope shall be permitted to turn independently of each other, the ribs maybe dispensed with altogether, Fig. 9 showing a construction of this character in which the entering end of one section has radial pins 10, adapted to slots to, cut in the covering end of the adjoining section, so as to permit the desired flexion of one section upon the other without; permitting the separation of the sections, and a like pin and slot may be used in connection with the other forms of joint shown when it is desired to prevent turning of the sections independently of each other.
Having thus described my invention, I claim and desire to secure by Letters Patent 1. The within-described casing or envelope for a flexible shaft, the same consisting of a series of sections or vertebrae, each consisting of a tube having one end of larger diameter than the other, the small end of one tube entering the large end of the adjoining tube, and said tube-sections being provided with stops, whereby the extent of tlexion of the casing is limited, substantially as specified.
2. The within-described casingor envelope for a flexible shaft, the same consisting of a series of articulated sect-ions or vertebral, each consisting of a tube having one end of larger diameter than the other, the small end of one tube entering the large end of the adjoin ng tube, and the enlarged end of each section having an internal rib and the small end having an external rib, whereby when the sections are fitted together stops are formed for preventing separation of the sections and limiting the fiexion of the casing, substantiallyas specified.
3. The within-described casing or envelope for a flexible shaft, the same consisting of a series of articulated sections or vertebrae, the entering end of one section having an external rib and the receiving end of the adjoining section having an internal rib, one of which ribs is independent of the shell of the vertebrt'e, substantially as specified.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
FREDERIO SCHOFF.
\Vitnesses:
R. SCHLEICHER, HARRY SMITH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US428023Atrue US428023A (en) | 1890-05-13 |
Family
ID=2496933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US428023DExpired - LifetimeUS428023A (en) | Casing for flexible shafts |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US428023A (en) |
Cited By (88)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2432278A (en)* | 1944-05-17 | 1947-12-09 | American Chain & Cable Co | Target towing device |
| US2471046A (en)* | 1946-12-09 | 1949-05-24 | Telegraph Constr & Main Co | Submarine cable repeater |
| US2838152A (en)* | 1956-05-11 | 1958-06-10 | Armament Components Inc | Circular flexible chute |
| US3189372A (en)* | 1962-05-24 | 1965-06-15 | Shell Oil Co | Flexible pipe joint having deflection limiting means |
| US3910277A (en)* | 1973-04-26 | 1975-10-07 | Draegerwerk Ag | Cryoprobe and flexible connector therefor |
| US4151865A (en)* | 1976-08-04 | 1979-05-01 | Alfred Lehrer | Flexible tube particularly for drillings, and a process for manufacturing said tube |
| US4396797A (en)* | 1980-12-27 | 1983-08-02 | Horiba, Ltd. | Flexible cable |
| US4814071A (en)* | 1987-03-23 | 1989-03-21 | Rotex, Inc. | Flexible connector for screening machine |
| US5353843A (en)* | 1992-12-10 | 1994-10-11 | Crown Industries, Inc. | Method and apparatus for protecting a hose |
| US5810306A (en)* | 1996-05-17 | 1998-09-22 | Custom Accessories, Inc. | Shape retaining flexible connector |
| US5865378A (en)* | 1997-01-10 | 1999-02-02 | Teledyne Industries, Inc. | Flexible shower arm assembly |
| USD406636S (en)* | 1998-01-06 | 1999-03-09 | Teledyne Industries, Inc. | Flexible shower arm |
| US5997047A (en)* | 1996-02-28 | 1999-12-07 | Pimentel; Ralph | High-pressure flexible self-supportive piping assembly |
| US6164570A (en)* | 1994-11-14 | 2000-12-26 | Water Pik, Inc. | Self-supporting reconfigurable hose |
| USD440641S1 (en) | 1997-01-10 | 2001-04-17 | Water Pik, Inc. | Flexible shower arm |
| US20030051762A1 (en)* | 1999-12-13 | 2003-03-20 | Peter Kessler | Bending and retaining device for tubes, cables and pipes |
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| US20050283904A1 (en)* | 2004-06-14 | 2005-12-29 | Macan Aaron D | Articulating shower arm |
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- 0
- USUS428023Dpatent/US428023A/ennot_activeExpired - Lifetime
Cited By (143)
| Publication number | Priority date | Publication date | Assignee | Title |
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