US1723007A - Door-bolt fixture - Google Patents

Description

lg- 5 1929- L. A. BlTToRF 1,723,007

DOOR BOLT FIXTURE Filed June 16, 1927 Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

LOUIS A. BITTORF, OF STERLING, ILLINOIS, ASSIGNOR TO NATIONAL MANUFACTURING COMPANY, OF STERLING, ILLINOIS, A CORPORATION OF ILLINOIS.

DOOR-BOLT FIXTURE.

g Application led .Tune 16,

Hy invention relates generally to fastening devices for swinging, folding and sliding doors such as are generally used for garages and similar buildings, and has to do particularly with a fixture for supporting, operating and latching door bolts.

One of the objects of my invention is to provide self-acting means for moving the door bolt to its extended or door-fastening position and for aiding in its movement to withdrawn position.

Another object -is to provide means for holding the bolt in either extended or withdrawn position, such means being adapted to safeguard against theft by preventing unauthorized operation of the bolt.

Other objects are to provide a reversible and invertible bolt supporting and operating structure which is simple in construction, cheap to manufacture and easy to operate; and the provision of means for holding the handle of the bolt in a definite position away from the door to permit the same to be readily grasped for operation.

Other objects and advantages will become apparent as this description progresses and by reference to the drawings wherein Figure 1 is a portion of a door shown in elevation and having my invention applied thereto.

Fig. 2 is aii enlarged perspective view of my bolt fixture for supporting, operating and latchiug the door bolt.

Fig. 3 is a front elevation of the structure shown in Fig. 2.

Fig. 4l is a side elevation of the structure of Fig. 2.

In the drawings, the door 1, which may be of a swinging type, is adapted to be fastened in its closed position by thebolt 2 having the right-angled handle 3. This bolt is slidably supported by the bracket 4 and thefixture 5, and its lower end, which may be slightly tapered, is adapted to cooperate with the socket 6 in the floor or sill in the well-known manner. The bracket and fixture may be secured to the door in any desired manner as by the bolts or screws 7.

One of the important features of my iiivention is that, when the handle 3 is released, thebolt 2 movesof its own accord by gravity to its door latching position as sliownin Fig. 1. To accomplish this, the Xture 5 is provided with aback 8 which is secured to the door, as stated by the screws 7, and abase 9 1927. Serial No. 199,157.

which is provided with an opening 10 to slidably receive and support thebolt 2. r1`hebase 9 is extended integrally, or otherwise, to provide an upturned and outwardly curved and tiiangularly-shaped double-cam piece which presents the oppositely directed andspirallike cam surfaces 11 and 12. rllheback 8, at its opposite sides, is provided with similar outwardly extending side plates orwings 13, each of which is provided with a circular notch or depression 111 in its top to receive and position the handle 3 when the bolt is in its withdrawn position. The lower part of each of these side plates is undercut and notched as at 15 to forni in a. sense spiral-like camways 16 and 17 through which the handle 3 is rotatably guided, and also to provide a pocket in which the handle is received and latched in the extended position of thebolt 2. Then the bolt is in its latched position as shown in Figs. 1 and a, theside plate 13 prevents vertical -movenient of the saine, and thenotches 15 prevent rotation of the bolt when the handle is moved vertically against the side plate.

In use, assuming that thebolt 2 is in the uiilatched or dotted line position of Fig. 1, to mov-e the same to its door-fastening position, the handle 3 is lifted slightly to release it from thenotch 14 and rotated away from the door'to a position between theside plates 13 and then dropped. The bolt, due to its weight, falls and the handle 3 strikes therounded peak 12 of the double-cam piece 12 and enters one or the other of thecamways 16 or 17. As the handle 3 enters the camway and continues to move downwardly, the spiral-like cam track rotates it into the latchin@ pocket beneath thewing 13 as shown in Fig. 4.

Then thebolt 2 is to be legitimately re- In this position, the handle is lhitched against vertical movement, due to the CII leased orv withdrawn to: permit opening of the door, thehandle is turnedforwardly away 'from the door and moved upwardly. During this movement, the cam action between the handle el the bolt and the cam surfacel 12 (orcam surface 11 as the case may be) assists in the lifting action in an obvious rmanner. When the bolt is moved to its fully withdrawn position, it is rotated to the dotted linepos-i.- tion ot Fig. 3 and engaeed innotch 14 in the topv oi". the side plate. 1-

- It will'V be noted. that ythe notches 2141 are-so loca ed 2 as; toA posi-tion .the handlef3` away. tlsoniw the doorto insn-rethatit may always-be readily `grasped 'tor operationwithout strik- E ingr the hand againstthe: door, which is very obi,eetionablev in many instances because yol splinters and, rone'hsurfaces. f Furthermore, it maybe desirable to turn=thehandle 3 one wayor theother; in its withdrawn position toz avoid interferencei in the yinovemento the doorl or to render theihandle more accessible,- and the two notched side plates 1.3 readily A rovide foritlns.- Also this construct1onfenables thedoor boltfto be monnted'npon either-` the: right or left hand; door with the coin venienees inoperationabove stated.

ldlhile I have sh own an di d eseribed my invention as app-lied toafboltstructure which is mounted at the-bettoniot thefdoor and adapt-v ed to v enejagefa,socketdnthe licor sill, it is to be under-stood that I do not'idesue to be hin-itedto such mounting and that it may also be mounted.atlthe topof the-door and; adapted to engage a socket in an overhead beam or. sill. In that even t, theI operation of my invention is obvious, the noteh.- 15 serving 'to latch the handle in the doei:lasteningfposition et the bolt while the cam assists in movement from this position whentheh andleis rotated. out` Wardly away from'the door. More par-tion? larlyyfthe boltfwvill be `wvithdrfmvn,from-its overhead socket andthe door unlatched at that point by slightly .lifting and rotating. the handle 3., alongN thespiral-:lfike cam track.` -In such inverted.vinounting, the stop. 18 on the bolt will` serve to lim-i-t.t.he downward-movement of the samewhenthe handle is rotated;

and. released as described.

AlthoughI have described but one enr-1 bodimentf ot my invention, it will be under,- stoodthat I do net fdesire to belimitedftofsuch construction because it isobvious th at: various ch anges andimoditieations may be made therein without departing' from the spirit and scopeof myinvention'as defined by the claims whiclrfollow.'A

I claim:

1. In combinati-on, a. doonbolt havingl arighteangled handle, and la bracket-for sup-` ponting,y operatingl .and .latching said.. bolt,- said .bracket-,having abase slidably receivingsaid.v bolt,l spacedv side. members projectingr outwardly fronrthe.E door above said.A base and having l notches 1n their upper` andy lower saidbase andhaving another notchiirits une derside to receive and; preventv rotarymovement of said boltwandhandle in their extended and door fastening; positions,,and ajcain i'or rotating,l said handle beneath said'. side plate and: into operative relation with the notclron theunderside of said plate when bolt is released andndioppedzfrom its withdrawn position.

8. Incombination, a1 door bolt.l having; yan

angled handle, and a braclnetr havin a1 part adapteditorotatably and slidably necelve said` bolt', anember adapted to support said. handle in a predeterminedpositioniwhenthe bolt is withdrawinvsaid: member being' spacedv :from said part to `form :aA pocket therebetween, .and

spiral-like @camtraclr,leadinor to said: Boeket;

for rotating' said handle land :bolt to throw said handle into said; poclretrwhenit is re,

leased an d dropped from its withdrawnposition.v

4f. In an invertible door.v bolt structure, a boltzhaving.y a lateralaprojection, va bracket for rotatablyl and reciprocably; .carrying said bolt, said bracket-.having al member: projectlng `outwardly from the door andhavlng notches 1nV its top and, bottom edges, an outwardly extending and curved cam spacedV from said: member andi providing: a; cam-way leading to one of saidanotehesrfor .rotating said bolt and for moving -saidyprojeetionrto and Strom engagement withfthatl notch:

5. A door bolt fixture for eoIitr-'olling` the movement of the doorv bolt; comprising apart connected to the door, a horizontal basepart.

having an opening. to slidably and rotatably receiver thel bolt, `said; members projecting` outwardly fromzs-a-id first partgand-above and spaced troia-said` baselpart,` notohesnin thev tops et saidf side membersto receiveiafpartof the bolt in., its :extended positiomwnotchesi in the lower parts of said Side members,4r con:- nected cam' tracks or'guiding'said handle partrbetween'either ofd saidside membersand saidzbase. .part-,- sa-id; side members and notches and base part formingretaining 4pockets which z receive 1 and prevent' movement of said bolt .vertically upwardzand: to its Withdrawn position.

6. A, door bolt l fixture; for; supportingirand controlling movement. of the boltieomprising a part connected; to the doorga-base orslidably and rotatablyfreceiving the bolt-,side

members projecting outwardly from said part above said base, and an upturned and out wardly projecting double cam piece extending ulnvardly irom said base to a point between said side members to torni joined spiral-like cam ways between said piece and side members, the arrangement being such that the door bolt is automatically positioned beneath one of said side members merely by releasing it and dropping it from its withdrawn position.

7. In combination, a door bolt having a projecting part, a member adapted to receive said part in the withdrawn position of said bolt, a pocket for receiving' said part in the extended position of the bolt, and self-acting means including a cam-way for moving said part entirely into said pocket when said part is released from said member, said pocket being at the end of said camway and so shaped that said part is prevented from movement backward through said camway when it is moved vertically.

8. In combination, a door bolt having a handle, a member having a notch in its upper part to receive and position said handle in the withdrawn position of the bolt, a pocket in the lower part of said member igor receiv ing said handle when the bolt is extended, and means including a spiral cam for automatically moving said handle into said pocket when it is removed from said notch away from said member and dropped, said pocket being so shaped that the handle cannot be moved therefrom by vertical movement of such handle.

9.A In combination, a door bolt having a handle, a member carried by the door and having notches in its top and bottom for receiving said bolt handle, said top notch being located to posit-ion the handle parallel with but spaced from the door in the with drawn position of the bolt and said bottom notch being located directly beneath the top notch to latch said handle in its extended position against upward and rotary movements.

10. In combination, a door bolt having a handle, a flat member carried by and extending outwardly from the door and having notches in its top and bottoni for receiving and latching said bolt handle parallel t-o the door, said top notch being located to space the handle away from the door in the withdrawn position of the bolt and said bottom notch being located beneath the top notch to latch said handle in its extended position against upward and rotary movements, and means for automatically moving said handle beneath said member and into cooperative relaa'ion with the bottom notch when the handle is moved out of engagement with said top notch and dropped.

Il. In combination, a door bolt having a handle, and a bracket for supporting the same having a pocket, and means for moving the handle into said pocket when it is released and the bolt is dropped from its withdrawn position, the walls of said pocket being adapted to so embrace said handle upon upward vertical movement of the same that rotary and unlatching movement of the same is prevented.

l2. A door bolt fixture including means for securing it to the door, means for slidably and rotatably supporting the bolt, and a triangularly-shaped cam piece having opposed and meeting spiral-like cam surfaces which are adapted to receive and support and guide the bolt in its movement toward and from its door fastening position.

In testimony whereof, I have subscribed my name.

LOUIS A. BITTORF.

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