US1004716A

US1004716A - Strike-plate for spring-latches.

Info

Publication number: US1004716A
Authority: US
Inventors: Henry G Voight
Original assignee: Russell & Erwin Manufacturing Co
Current assignee: Russell & Erwin Manufacturing Co
Priority date: 1911-07-20
Filing date: 1911-07-20
Publication date: 1911-10-03
Anticipated expiration: 1928-10-03

Description

H. G.- VOIGHT. STRIKE PLATE FOR SPRING'LATCHES. APPLICATION FILED JULY 20,1911.

1,004,71 e. Patented 001. 3, 1911 box 3. v

9-is a headon the rear of the shaft 8.

To all whom it may co warn: Be it. known that I, HENRY, G. VOIGHT,

,New Britain, county of Hartford, State of useful Improvements in Strike-Plates for Spring-Latches, of which the following is a full, clear, and exact description.

advance movement of the latch into the keeper opening is freeand unretarded.

2 represents a occupies-the filler opening flush with the surface of the strike-plate. v

able manner, as by a thread. The plate 9 T is located preferably between'the head block: brake 10 bearing against theplate 9 re- 110' when, srarns ma enrich.

HENRY VOIGHT, OF NEVI BBITAIN, CONNEGTIOUT, ASSIGNOR TO RUSSELL & ERWIN MANUFAGTURINGCOMPANY, OF NEW 13 CONNEGTIOUT.

Application filed July 20,

citizen of the United States, residing at Connecticut, have invented certain new and v My invention relates to an improved strikeplate for' spring latches, the object being to,

provide: a construction whereby when the latch springs into the keeper opening insaid strike-plate it will be retarded so as to prevent the disagreeable clicking noise. In

many public institutions, such as hospitals and sanitariums, this clicking noise is a sourceflof great annoyance, and it'is to overcome this,objectionablefeature that my invention is mainly aimed; In the present inventionthe construction is such that the first In-the' accompanying drawings, Figure 1 sembled ready for use and in its normal position. Fig. 2 is a-similar "View showing the parts in a different position. Figs-3, 4, 5, 6"

each showjtwo views of different det ls I 3 1 represents a'strike plate having the usual,

filler plate which normallyvf 3 is, 'a box like rearward-extension on the plate 1. The filler-plate 2 is guided in the.

" 4r'is a rearward sleeve-like extension on th 5 is a ca-o'for' the rear of the box 6Iis a sleeve-like extension at the rear of the cap 5.-

'7 is aco'ntraction intermediate the length of the bore of the extension 6.

8 is a shaft having a spiral thread thereon.

This head normally lies just to the rear ofthe contraction 7.

9 is a friction disk or plate, to the rear of the head 9 and normally out of operative engagement therewith. 10 is a head block at the rear end of the extension 6 and-secured thereto in any suit- Specification of Letters Patent.

R-ITAIN,

STRIKE-PLATE FOB SPRING-LATCI-IES.

1911; Serial No. 639,545.

, l0 and the end of the. extension 6, and is capable of rotation.

10 is -a brake carried block 10 and bearing against the plate 9. The spring lO 'may ormay not be adjustable as desired. I i

- The head block 10 may or may not headjustable on the :extension 6 as desired. 4

lltis a lock scr'ewfor the head block.

sion 4. 1 f is'a pin carried by the extension 4, the end of'sai'd pin projecting into the spiral on the shaft 8. i

15 15 are screws arranged to hold the cap' 5 against the rear end-of the box 3.

16- 16 are lugs projecting forwardly from the plate 9. i

"from the head 9.

gsho'wn in Fig. 1; In this position the spring 112 holds the filler plate 2 projected, and the "engagement of the pin 14: an 'the spiral shaft 8 tends to draw the head so that the lugs 17 will clear the lugs 16' on influence of its'spring, press said plate 2 inwardly. The first of this movement is Overcome only the strength of the spring 12,- which is comparatively light. Since the "latch bolt may partake of its first movement againstbut little resistance, the forward end or nose of the latch bolt enters into the keeper opening sufficiently so that there is no danger'of the door; swinging open. As soon as the plate 2. has been repressed or pressed in to a slight degree, it will, by reason of the engagement of the pin 14 in the spiral shaft 8, cause the head 9 to move backwardly and away from the contraction 7,'thusbringing the lugs i'nto engage ment with the lugs I6, which lugs operate after: the manner of a clutch to couple together the head 9 and the plate 9. Any

cause, through the aforesaid pin and spiral connection, rotation of -.the head 9, and throughthe medium of the clutch lugs, a corresponding rotation of the plate 9*. The

12 is a spring surrounding the shaft 8, the

The normal position of the parts is'as comparatively free, it being necessary tofurther repression of the filler plate 2 wilI.

CONNECTICUT, A CORPORATION OF Patented 0011.3, 1911.;

within the head ends of said spring bearing against the 9ontraction 7 and the rear end of the extenforwardly,

the plate 9 When the spring latch bolt. engages the filler plate 2,it will, under the- 75' 17l'7. are lugs projecting rearwardly' tards the free rotation thereof to a sufficient extent to retard the inward movement of the filler plate 2, and correspondingly retard the.

and sufiiciently slow toprevent the aforesaid annoying click. \Vhen the latch bolt is retracted, the clutches instantly release,.so that the head 9 will turn with comparative freedom, and thereby permit the filler plate 2 to qiiickly follow out the retracting latch until said filler late assumes its ndrmal closing position lndicated in Fig. 1. In Fig. 2 the parts are shown in the position they would assume with the latch bolt projee'ted into the keeper opening, repressing the filler plate 2. a

What I claim is: v

1. In a strike-plate for spring latches, a

face plate having a keeper opening therein,

a filler plate for said opening movable to and fro,'a friction device, means of con- Inection between said friction device and said filler plate, including a clutch, said clutch being arranged to engage when the filler late is repressed and disengaged when the fil er plate is advanced, and a spring for advancing said filler plate.

2. In a strike-plate for spring latches, a.

face-plate having a keeper opening therein, a filler plate adapted thereto and arranged to be movable in and out, a rotatable shaft at the rear of said plate,a spiral connection between the plate and shaft whereby said; shaft will be rotated when said plate is moved in or out, a. rotatable friction plate, a brake therefor, a clutch between said shaft and said friction plate whereby said shaftwill be connected with said friction plate I when said filler plate is moved inwardly and will be disconnected from said friction plate when said filler plate moves outwardly,

and a spring for advancing said filler plate.

3. In a strike-plate for spring latches, a face plate having a keeper. open ng therein, a filler plate adapted to said opening and mov lble in and out, and a friction brake'for tinlnling the inward movement only of said filler plate.

4. In a strike-plate for spring latches, a

face platehaving a keeper openlng therein, 1