US929907A - Boltwork for circular doors for safes. - Google Patents

Description

W. E. WILKINSON & G L. MUMMERT BOLTWORK FOR CIRCULAR DOORS FOB SAPES.

APPLICATION FILED 0013.1, 1908.

929,907. Patented Aug, 3, 1909.

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WILLIAM E. WILKINSON AND GEORGE L. MUMMERT, OF YORK, PENNSYLVANIA, ASSIGNORS TO YORK SAFE 5: LOCK COMPANY, OF YORK, PENNSYLVANIA, A CORPORATION OF PENN SYL'VANIA.

BOLTWORK FOR CIRCULAR DOORS FOR SAFES.

Specification of Letters Patent.

Application filed October 1, 1908.

Patented Aug. 3, 1909.

Serial No. 455,679.

To all whom "it may concern:

Be it known that we, WILLIAM E. WIL- KINSON and GEORGE L. MUMMERT, citizens of the United States, and residents of York, York county, Pennsylvania, have invented certain new and useful Improvements in Boltwork for Circular Doors for Safes 2 and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the characters of reference marked thereon.

The present invention relates to improvements in bolt work for circular doors, the ob ject of the invention being to provide an improved arrangement of the mechanism for simultaneously projecting and withdrawing radially arranged bolts adapted to secure all portions of the door in its j amb or frame, and the invention consists in certain novel details of construction and combinations and arrangements of parts all as will be hereinafter more fully described and pointed out particularly in the appended claims.

Referring to the accompanying drawings: Figure 1 is an elevation, partly broken away, of the inner side of a circular door embodying the present improvements, the glass door and frame being removed. Fig. 2 is a transverse section through the parts illustrated in Fig. 1. Fig. 3 is a detail transverse section on an enlarged scale showing the mechanism for moving the bolt operating wheel. Fig. 4 is a front elevation of the movable parts illustrated in Fig. 3, and with a section of the bolt operating wheel in dotted lines.

Like letters of reference indicate the same parts in all the views.

The letter A indicates the inner plate of a circular door for safes. On the rear face of this plate two parallel annular projections a are formed and provided with a series of radial hearings or apertures for the reception of the radially disposed bolts B adapted to project beyond or be withdrawn within the periphery of the door in the well understood manner. Each radial bolt B is bifurcated at its inner endfor the reception of the periphery of a bolt operating wheel C, the connection between the bolts and wheel C being formed by transverse pins, preferably in the form of threaded bolts 1) secured in the arms Z) of the locking bolts B and passing through tangentially arranged slots 0 in the rim of the bolt operating wheel C. By this arrangement of the parts, rotation of the wheel in one direction or the other causes the bolts to be projected or retracted, as the case may be, the rim of the wheel prevents any rotation of the locking bolts B on their own axes, and the power for moving the bolts is applied in the axial line of each bolt, whereby any tendency to bind or stick in their bearings is effectually prevented.

In the preferred construction, the wheel O is cut from a solid flat plate of metal with a single cross piece O, and apertures C at each side of the cross piece in which the locks EE may be conveniently located and se cured to the door plates in the usual or preferred manner. The cross piece 0 is connected with or has formed upon it a central hub or bearing F adapted to receive a journal G, and where desired an antifriction or roller bearing formed by rollers 9 may be interposed between the journal and hub of the wheel to prevent undue friction in moving the parts from their locked to unlocked position, and vice versa.

In practice, the central bearing for the Wheel supports practically the entire weight of the same, and being small as compared with the diameter of the wheel offers but little or no resistance to its rotary movement, the device in this respect being much superior to devices wherein the operating wheel is in the form of a ring supported by bearings at or near its periphery, as has heretofore been proposed.

For moving the bolt operating wheel, a crank shaft H is journaled in the plates of the door and provided with a crank arm 7L connected by a link it with the rim of the wheel C, as will be readily understood from an inspection of Figs. 1 and 4 of the drawing. While the crank shaft H extends entirely through the door, it is preferably formed in such manner that the removal or breaking of its outer end will not afford access to the interior of the safe, and for this purpose the shaft is made in sections, the inner section which has been lettered H is passed into its bearings from the inner side of the door, and may be of different diameters, as shown at H, so as to break the continuity of the bearing surface and insure a distribution of strain to all of the door plates, should an attempt be made to wreak the safe. The ester of forward end of the shaft which has been lettehed H is assed into its hearing from the 5 able socket or connecting means for the end of the rear section H of the "shaft. Both, sections of the shaft are held in place by sleeves H threaded into the door plates-and held against withdrawal by set screws such as indicated at 71 or other appropriate and well known means. v T 0 give a suflicientleirerage, -the eater end of the opehahhig shah is preferabl provided with a toothed segment with which a pinion 7c is adapted to-co6perate, and the pinion 7c is connected with a hand wh'eel-L,fwl'1'e'rehy it and. the segm nt may he ahe'v ed the turning the belt operahi h'g wheel in one direction or the other. Y

A single lcc'k bolt, such as indieated at M, maybe em loyed for leaking the Operating wheel with the leekin'g bolts projected, and as a coiaveni ent arihngemeht 'ef the traits one face of the rim of the wheel may be provided with lodking segmeh t's N between which the bolt M is adapted to pass when the pasts are in "their locking position, as shmvn Fig. l. =Fchpreheating the hel t work freer dust and atmospheric inheehees, the parts are rehema bly 'i helhsecl glazed (MOT-s, showh in Fig. 2, at 0 ,a1theeg h it will be "understood that in so far as the invention of the resent applieatioh is eon'cei ned these pro-- tec tiiig doors may be omitted.

Having thus des'cifihec l the invention, what we ei-him as new desire to same by Let- 1. The combination with a sale door hav ing two annular projections formed integral therewith on the innei' side with radially dis posed hearings in said projections, oi b'olts throngh the door, "a link conned-ting the crahk of thes'h al t width the wheel, and means for oscillating the shaft, 'thei'eby moving said wheel to project and retract the belts.

2. The combination a door and -a series of indiailij disposed bolts niovably mounted tiheierih, of an angst i ly movable wheel having its axis cei nci nit with the center frorn which said bo'l ts radiate, said wheel having in it's pen hery a earn slot for each and every bolt, pins carried by the bolts and passing through the said slots, a crank shafft jets-halal i-n t'he door, a link connecting' the crank of said i'iaft with the wheel, and rhea-1 1s fo r esci l lating said shaft to m ve the wheel in one direction "or the other, substantially as described.

WI L A Y ILKIN O V GEORGE L. MUMMERT.

Witnesses A; G. K'rhizin, WALT-ER, BIH'IJLI-IAR'I".

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