US67938A - Improvement in combined look, and enob-latch - Google Patents

Description

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E. G. F. ARNDT AND C. E. L. MOEBIUS, OF NEW YORK, N. Y. Letters Patent No. 67,938, dated August 20, 1867.

IMPROVEMENT IN COMBINED LOCK, AND KNOB-LATCH.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, E. G. F. ARNDT and C. E. L. MOEBIUS, of the city, county, and-State of New York, have invented a new and useful Improvement inLocks; and wevdo hereby declare that thc following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a. side view partly in section ot' our improved lock, the outside covering-plate being removed.

Figure 2 is asimilar view of the lock, the parts being in different position.

Figure 3 is a. side view of the lock. i i

Figure 4 is a vertical cross-section of the same, the pla-ne of section being indicated by Ythe line :c fr, iig. 3.

Figure 5 is a side view of the key by which this lock maybe opened.

Figure 6 is a view of the night-key, by which the bolt can be 4momentarily drawn in.

Similar letters of reference indicate corresponding parts.V i

This invention'reletes to certa-in improvements in the lock for which'Iietters Patent were granted to E. G. F. Arndt and A. Hiihne on the eleventh day of November, 1862. The invention consists in so arranging a. spring-bolt lock that it may be used as a common bolt-lock, or as a night-lock, and which can be so locked from the inside by a guard-plate that the bolt cannot be moved by a key.

A represents the rectangular case of the lock, in which a isV the front plate and b the back or inside plate, or that which will be on that side of the door which is in the hall or room on which the lock'is applied. C is the bolt, of which that part which is on the inside ofthe ease A consists of two arms, c and d, between which a groove or recess, c, is formed, through which the hub D passes. The latter is round where it fits through the plates a and b of the lock, butV that portion of it which is between these plates is square or polygonal, so that it cannot revolve in the narrow end of the recess e,wbile in the widened portion of the same it can be freely turned. To one side of the boltr are secured two pins,f and g, to which the vibrating tumblers E and F are respectively pivoted. 'The form of the tumbler E is made similar to that of the letter U, its one a'rm z being on the upper side of the hub D, together with the arm c of the bolt, while its other arm z'is near to the lower extremity of the arm d of the bolt, and so as to ,be reached by the key-bit. The tumbler F is a bent plate, as is shown (partly by dotted lines) in gs. 1 and 2. Its .one end is pivoted by a pin, j. to the tumbler E, which pin is directly between and almost in line with the pins giandf, when the bolt is unlocked, and its other end is on the underside of the hub D. The latter is thusenclosed between the arms ed of the bolt, and also between the tumblcrs E and F. A spiral spring, G, which is secured to the arm z'of the tumbler E, tends to force the tumblers toward the hub, and a'iso to throw the bolt-out, while the same is unlocked, and when itis drawn in by the action ot' the stem H or key. k are the studs on the hub D, and Z Z are studs secured to the edges of the tumblers, which enclose the hub. By turning the hub it operates the tumblers by means of these studs c and Z. When the bolt is unlocked, as in fig. 1, it can be operated by theshank or stem H, which passes through the hub. By turning the hub in either directionfone of the studs 7c will operate one of the tumblers,l and as the latter is connected with the bolt by either the pin for g, the said bolt will be drawn into the lock, but will at once be thrown out again by the spring G as soon as the handleI of the `stem is released. Thus far the bolt operates like a common spring or catch-lock. By applying the key J, which turns on a pin, t, through a hole in the front plate a of the lock, its bit willstrike and raise the arm z' of the tumbler E, and will thereby throw the arm h of the same o' the hub, and as the two tumblers are connected by the pin j the tumbler F will be also thrown ot the hub, so that when the bit of the key comes between two lugs, 'm m, which project from the arm d of the bolt C, the latter can be freely moved forward or locked, and will then carry the tumblers forward with it, as the lugs lrun clear of the lugs 7c on the hub. The bolt is guided bya pin, r, which is secured to the plate a of the case, and which passes through a slot, S, in the bolt, as is clearly shown in the drawing.` As soon as the bit of the key is disengaged from the bolt the tumblers will, by the action of thespring Gr, be again thrown aganstthe hub, the lugs Z coming in front of the lug 7c, (while formerly they were in rear of the same,) and then all the parts will be in the position shown in fig. 2. Itv will be seen that when the bolt is thus locked the hub is in the narrow part of the recess e and Acannot be turned, so that .the bolt,l when locked, cannot be operated by the stem H, but only by the key J. To the tumbler F is secured a pin, K, which projects through the inside plate b of the lock-case, in which plate a slot, is providedfor the said pin to move in during the vmotion of the tumbler E. By m'eans of this pin the bolt .can be unlocked from `the `inside of a room or hall without the use of the key` By a guard plate, L, which is pivotetl or hinged to the plate b, as is`\clearly shown in iig. 3, the pin Kean be locked so that not evenA the key from the outside can operate the bolt. Only one end of the stem H is made square, the main portion being rounded. When it is desired to throw the stem out of gearwith the hub D it is onlyvnecessary to pull it toward the inside of the hall or room and throw a guardplate, M, between a shoulder, o, on the stem and the plate b of the lock-case. The round portion of the stem will then only bein the hub, and `the stemican be-turned as much as desired without operating on the hub, and the sternl thus made useless the door can only be'opened by the use of tlle key J or by a night-key, N, the bit .of which only operates against the side of one'oi the lugs m on the bolt. By the use of this night-key the bolt can be operatedin asimilar manner as it is by the stem H. When the bolt is locked the night-key cannot be used, nor can Vtliestenn, even if the same is again thrown into gear with the hub. Only the key Jean unlock the bolt again. Between thelugs m mandvthe arm of the tumbler E is interposed a thin plate, p, secured to the bolt, whieh iitsiintosagfn'otoli'inthe keyv J,and prevents feeling of the lock. A spiral spring, O, is arranged around the'steml-'H between. theplate a andasbouller on the'said stem, which will throw the square end of the stem into thebubagam'fas seen as the guard-plate M is disengaged -from the stein. The lock can thus be used for a great many'n-p rpozsesV Byleavingfoithe andslot n'the'lock can be made so as to be only operated by the keys ands un v, n ,l i

Having thus deseribed myA invention, llclaifnras''new, and desire to secure by Letters Patent- 1. The square o I v lygo'nalbub D,wheniarrangedbetween the arms c and. d of the bolt in the recess e", which is narrow at t e end,- Jsubstantially as and fori-the purpose herein shown and described. v

2. The stem H, wheninade'p'artly square'C-'or polygonal) 4and partly round, in combination with the guard plate M and spring O, allin'ade'andvoperatingsubstantially as and for the purpose herein shown and described.

3. The vibrating tumblers E and F, when ,lpivot'e'd 'together andarranged substantially as herein shown and desribed, in combination with the bolt 0,'spring square or polygonal hub D, all made and operating substantially as heroin shown and described. Y

4. '.lhe guard-plates L and M, in combinations-ith each other and with the stem H and pin K, all made and operating substantially as andfor the purposeherein shown and described.

5. A spring-bolt lock, which is so constructed vthat it can be operated by a. stem, H, and key, J, or by the latter and a night-key, N, or by all three, for by the key J only, substantially as and for the purpose herein shown and described.

E. G. F. ARNDT, C. E. L. MOEBIUS.

Witnesses:

WM. F. McNAMARA, ALEX. F. ROBERTS.

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