US1253679A - Combined lock and latch. - Google Patents

Description

S. R. FRAIM.

COMBINED LOCK AND LATCH.

APPLICATION FILED JULY I5 I917.

Patented Jan. 15, 1918;

2 SHEETS-SHEET I.

S. R. FRAIM. COMBINED LOCK AND LATCH. APPLICATION FILED JULY 16.1917- ]Patented Jan.15,1918.

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SAMUEL It. FBIAIIVI, ,OF LANCASTER, PENNSYLVANIA, ASSIGNOR TO THE E. T. FRAINI LOCK COMPANY, A CORPORATION OF PENNSYLVANIA.

COMBINED LOCK AND LATCH.

Application filed July 16, 1917.

To all whom it may concern:

Be it known that I, SAMUEL R. FRAIM, a citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Combincd Locks and Latches, of which the following is a specification.

This invention relates to combined locks and latches.

The object of the invention is to provide a combined lock and latch which shall be durable, positive and reliable in operation, and wherein the parts employed shall be of such form and so combined as to permit of their being stamped out of sheet steel, thus materially adding to the ch-eapness and insuring the strength and lasting qualities requisite.

With this object in view the invention consists ofa combined lock and latch having the novel generic and specific features of construction and arrangement of the parts substantially as hereinafter described and claimed.

The invention is illustrated in the accompanying drawing in which;

Figure 1 is a perspective view of the lock, the cap of the case being removed;

Fig. 2 is a side view of the bolt and bolt spindle;

Fig. 3' is a perspective view of a cross bar which is attached to the spindle of the bolt;

Fig. 4 is a perspective View of thecross plate which serves as a guide for the bolt spindle and against which one end of the bolt spring bears;

Fig. 5 is a perspective view of the knob tumbler with the knob attachedthereto;

Fig. 6 is a side view of the cap ofthe casing showing the inner face thereof withthe key tumbler attached theieto;

Fig. 7 is a sectional view, the section being taken on line 77 of Fig. 6;

Fig. 8 is a perspective view of the plate "by which the. key tumbler is attached to the cap of the case;

Fig. 9 is a perspective .view of the disk which isinterposedbetween thekey tumbler and the plate; 1

Fig. 10 is aplanview of one of the wards employed; and,

Fig. 11 is aside view of the key. The working parts of the lock 21261111- .closed I in .or attached ito the case .1 tzwllifi l Specification of Letters Patent.

Patented Jan. 15, i ild.

Serial No. 180,715.

may be of any suitable construction, being preferably formed of sheet steel, and having the bodythereof composed of a single piece of metal as shown, with one end 2 thereof having an opening through it for the reception of the bolt andextending beyond the sides of the case and having openings for screws by which it may be attached to the edge of the door.

The cap?) which is preferably of sheet steel is attached to the body of the case in any suitable way, for instance it may be provided at one end with a curved lip adaptedto enter an. opening in the rear end of the case and to swing onthe lip after the manner of a hinge, and with two lugs 5 adapted to be sprung into openings in the portion 2 of the case to secure the cap in place.

Arranged in the case is a bolt composed of a shank 6 and ahead 7. The shank is preferably in the form of a flatplate of stamped sheet steel angular in cross section, and the head 7 may be secured to it in any suitable way as by casting it on the shank. Formed with the shank are lateral extensions 8 each of which has projecting from one side thereof a lug 9. A cross piece 10 also of stamped sheet metal has through it a slot .11 which receives the shank 6 of the bolt, and it has in it openings 12 through which extend the lugs 9 on the extensions of the bolt shank. The parts may be secured together by upturning the ends of the lugs thus securing the cross piece securely to the shank. The upper and lower edge of the cross pieceeach has bent upand extending from it a-lip 13 one of which lips in any position of the bolt serves as a stop for limiting the knob hub of the lock in itsmovement in one direction, as will be describedhereinafter.

Arranged in the rear ofthe case is a plate 14 having the ends 15 thereof bent at right angles, which ends are adapted vto bear against the inner face of the rear end of the case. The plate'has through it an opening 16 of a size and shape to receive, support and guide the reduced rear end 17 of the shank of the bolt.

A coil spring 18 is arranged upon the re duced portion 17 of the shank and one end thereof bears against the cross piece 8 of theshank and the other end bears. against the front face ofthe plate 14, the tendency 4. .15. theeentiee bein to; maintain the head o of a plate having struck up from it the two projections 20 and The arrange ment of the hub tumbler in relation to the cross piece attached to the bolt shank is such that when the head of the bolt is in.

its normal extended position the plate contacts with the projections and 21, thereby limiting the outward movement of the bolt induced by the spring 18. The shank 22 of the knob has a square end which enters an opening 23 eccentrically located in the hub 19, and the shank is suitably secured to the rollback as by riveting the end of the shank. Attached to the shank 22 and located on the outside of the case is a knob 2st struck up of sheet metal and preferably having a roughened edge. The knob 24 is attached to the shank 22 by riveting it to the outer end-of the shank.

The bolt may be retracted by turning the knob 24 in either direction. The arrangement of the parts is such that when the knob is turned to bring the projection 20 into contact with the cross piece 10 the bolt may be withdrawn to bring its outer end flush with the end of the case. The extreme movement of the projection 20 however is such that no locking of the bolt in a withdrawn position is permissible because its movement is checked before the projection is brought into line with the shank. Therefore when the knob is released the bolt will, through the action of the spring, be thrown outward into operative position. WVhen the knob is turned in the opposite direction, the projection 21 passes the longitudinal axis of the shank and contacts with the lip 13, the pressure of the spring 18 holds the bolt in retracted position until the knob is manually reversed.

Should the bolt be reversed the lip 13 shown as extending from the upper edge of the cross plate would be brought into position to extend into the path of movement of the projection 21.

The cap 3 has secured to the outer face thereof a ward cylinder 25. This cylinder is preferably constructed of a single piece of metal formed by dies into the desired shape, and is composed of two parts connected by the outer end 25 through which is one opening for the reception of a key. Each side of the body of the cylinder has in it two or more angular openings 26 such openings being in oppositely arranged pairs, and into these openings project nibs 27 angular in cross section. extending from the peripheries of the wards 28. In arranging the wards in the cylinder the sides of the latter are drawn slightlyapart, the ward introduced to have their nibs project into the openings into the cylinder and the parts of the latter are then brought together and secured to the outer face of the cap in any suitable way as by the rivets 29.

The wards employed each has an opening 38in the center thereof and communicating with this is a side opening 39. As herein shown two wards are employed, though any desired number may be used. By changing the relative positions of the wards a large number of key changes may be effected. The wards are identical in form, and in placing the wards in the ward tube they are so arranged that the side openings of adjacent wards extend in opposite direc tions.

The key necessary for use in connection with the described lock has slots 36 of a number corresponding to the number of tumblers, and as these slots must necessarily because of the location of the openings in the wards, each extend to the middle of the key, safety is secured because of the impos sibility of making a pass or skeleton key which can be introduced and turned in the ward cylinder.

Arranged on the inner face of the cap opposite to the ward cylinder is a key operated tumbler 30 composed of sheet steel and having upturned projections 31. These projections 31 normally bear against the front face of the cross plate 10, and serve in con nection with the projections 20 and 21 of the knob tumbler to check the movement of the bolt when forced outward by the spring, and to retain the bolt head in operative position. The cap has'in it a circular opening, and arranged on the outer face of the cap in a position to cover this opening is a plate 31 which is attached to the tumbler 30 by means of rivets 32. A disk 33 ofa size corresponding to and located in the opening in the cap is interposed between the turnbler 30 and theplate 31, and has through it openings 34 through which pass the rivets by which the tumblers and plate are connected. The disk 33 being of a sizecorresponding to the opening in the cap insures the retention of the cap and plate in proper relation to each other and to the key cylinder.

The key 35 employed has extending from the end thereoftwo nibs 37, and the plate 31 has in it two openings 38 of a size to receive such nibs. V

Attached to the inner face of the case at the front end thereof is a plate 39 suitably secured to the case, and at a point opposite to this plate the cap has an inwardly indented portion which forms a projection 40 on its inner face. \Vhen the parts are assembled the plate and projection bear against the bolt head serving to strengthen the bolt and take up side strain when the bolt is brought into contact with a keeper in closing a door. This manner of holding the bolt permits of the travel of the bolt back and forth in a straight line only.

The case, all the movable parts of the lock, and the means for securing such parts in place, with the exception of the head of the bolt and the spring are of such forms and so arranged that they may be of stamped sheet metal with little or no waste, and as they are by preference of sheet steel a cheap and extremely strong and durable lock is produced at small cost, and as the corresponding parts are identical in form in each lock a new part can be substituted for a worn or broken one at a trifling cost.

I claim:

1. A lock of the kind described comprisin g a bolt having a metal shank, a cross plate having an ear extending from each edge and attached to the shank, and a knob rollback having ears extending therefrom, one of the ears on the cross piece extending into the path of movement of one of the ears on the rollback.

A lock of the kind described comprising a bolt having a metal shank having lateral extensions lugs projecting from the extensions, a cross plate having an opening receiving the shank and openings receiving the lugs, and an oscillating rollback having projections connecting with the cross plate.

3. A look of the kind described comprising a bolt having a metal shank having lat eral extensions, lugs projecting from the extensions, a cross plate having an opening receiving the shank and openings receiving the lugs, ears extending from the edge of the cross plate, and a knob rollback having projections contacting with the cross plate, one of the ears extending into the path of movement of one of the projections from the knob rollback.

4. A lock comprising a bolt, a cross plate having an ear on each edge attached to the shank of the bolt, a rollback of sheet metal having struck up projections adapted to contact with the cross plate, and a shank attached to the rollback, the projections being located at diflerent distances from the point of attachment of the shank.

A lock comprising a case, a sliding bolt located in the case, a plate attached to the inner face of the case and adapted to contact with the bolt, and a cap having a depressed portion forming a projection adapted to contact with the bolt, the plate and projection being oppositely arranged.

6. A lock comprising a bolt, a cross plate having an ear eXtending from each edge and attached to the bolt, and a knob rollback having ears extending therefrom, one of the cars on the cross plate extending into the path of movement of one of the ears on the rollback to limit its movement.

7 A look comprising a case, a sliding bolt located in the case, a plate attached to the inner face of the case and adapted to contact with the bolt, a cap having a depressed portion adapted to contact with the opposite side of the bolt, and a plate transversely secured in the case having an opening therein adapted to receive and guide the inner end f the bolt.

In testimony whereof I aflix my signature in presence of two Witnesses.

SAMUEL R. FRAIM.

Witnesses JNo. N. HETRICK, MERLE R. BUCKHART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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