US518884A - Fredrick william harris - Google Patents

Description

I. W. HARRIS.

. (No Model.)

LOCK. I

Patented Apr. 24, 1894 UNITED STATES To all whom it may concern.-

Be it known that I, FREDRICK WILLIAM HARRIS, of the town of Woodstock, in the county of Oxford, in the Province of Ontario,

Canada, have invented certain new and usea notch in the /signed to be engaged by the innermost bit of lar view ful Improvements in Locks, of which the following is a specification.

My invention relates to improvements in looks more particularly adapted for drawers to and the object of the invention is to provide a simple, cheap and efficient lock, which will not readily get out of order or be liable to be picked and it consists in carrying down the bolt adjacent to the key guide and providing side of the bolt, which is dethe key, a spring finger being also provided to operate against one of the bits so as to hold the bolt in position when shot or withdrawn,

20 and the whole being arranged in detail as hereinafter more particularly explained.

Figure 1, is a perspective sectional view showing my lock and the position of the parts when the bolt is withdrawn. Fig. 2, is a simishowing the position of theparts when the bolt is shot. Fig. 3, is an enlarged detail from the front showing the back "plate, key guide, bolt and spring. Fig. 4, is a view from the inside of the drawer showing the lock removed and the form of a groove or recess cut in the drawer.

In the drawings like letters of reference indicate corresponding parts in each figure.

A, is a portion of a drawer, which has grooves, C, and, D, cut'in itsimultaneously by circular cutters commonly known and used for this purpose.

B, is a hole made through the drawer.

C, is the back plate of the lock which is fitted into the groove, C, and, D, is the top plate which is attached to or forms part of the back plate, C. The plate, D, fits into the top of the groove, D, made in the drawer.

E, is a bolt which extends through a slot, 6. made in the top plate, D.

F, is the key-guide which is attached at the back to the plate, C, and has wards, f, through which the bits, g, of the key, G, pass as the key is turned.

PATENT OFFICE.

FREDRICK WILLIAM HARRIS, OF WOODSTOCK, CANADA.

LOCK.

SPEGIFIGATIONforming part of Letters Patent No; 518,884, dated April 24, 189.4.

Application filed April 26, 1893. Serial No. 471,746. (No model.) t

e', is a V-shaped notch made in the side of the narrow shank, E, of the bolt, E.

. H, is a spring which is secured to the bolt, E, as shown.

h, isaproj ection forming part of the spring, which projects slightly into a notch, f made in the innermost ward of the key guide, F. When the locks areloose ready for shipping the bolt, E, will thus be prevented from shooting out of the lock.

I, is a bridge which it will be seen in the drawings extends'between the outer and middle ward. The sides of the bridge, I, are secured against the back of the plate, C, in any suitable manner.

t, is a lug forming part of the side of the bridge I, bent inward and bearing against the.

shank, E, opposite the lower end of the spring, H. This projection 71 also limits the throw of the spring so that it will be-impossible forany person to tamper with it and throw it out of position. 11', is a similar lug situated at the top of the side of the bridge, I, and designed to hold the bolt, E, against the plate, C.

f", are projections extending from the two sides of the key hole guide into the escutcheon, J, which is secured in any suitable manner to the drawer. The projections, f", are tapped or riveted into the escutcheon plate, J.

Having now described the principal parts involved in my invention I shall briefly describe its operation. I In Fig. 1, the key is shownwith the bits extending downwardly the lower bit extending into'the V-shaped notch, 6. By turning the keyin the direction indicated g,.of the key comes against the spring and passes the same and the innermost bit, g, fits within the notch and by acting against it raises the bolt into position shown in Fig. 2, the top of I the spring serving to control the upward movement of the bolt, E. T0 withdraw the bolt the key has to be turned in the opposite direction to that shown in Fig. 1,

when the innermost bit, g, of the key will act against the ward and spring and withdraw the bolt into the position shown in Fig. 1.

From this description it will be seenthat I the center bit,

2. The combination with the bolt, E, provided With the shank, E, and the key guide, F, provided with the Wards,f, the innermost ward of which has a notch, f, of the spring, H, having the lug, 72', designed to project slightly into the notch, f, as and for the purpose specified.

FREDRIOK WILLIAM HARRIS.

Witn esses CLIFFORD KEMP, F. J. URE.

Images