US139687A

US139687A - Improvement in bell-pulls

Info

Publication number: US139687A
Authority: US
Publication date: 1873-06-10
Anticipated expiration: 1890-06-10

Description

UNITED STATES PATENT OFFICE.

WALLACE T. MUN GER, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR 'TO P. 8v F. CORBIN, OF SAME PLACE.

IMPROVEMENT IN BELL-PULLS.

Specification forming part of LettersiPatent No. 139,687, dated J une 10, 1873 application led April 12, 1873.

To all whom 'it may concern:

Be it known that l, WALLACE T. MUNGER, of New Britain, in the county of Hartford and State of Connecticut, have invented an Iin' provement in Lever Bell-Pulls, of which the following 1s a spi cfcation:

This bell-pull is constructed so that the chain or wire is moved a greater distance than the lever-handle, so as to secure a better action in the bell. The handle is at one end of a bent lever, and. at the other end a link is connected that extends to the segmental chain-pulley, and is` connected to the same comparatively near the axis upon which such segment swings, so that `the surface ot' the chain-pulley segment moves in the same direction as the pull, but at a more rapid rate. l ,f

ln the drawing, Figure l is a vertical section of the face-plate, and an elevation of the pull and parts connected therewith. Fig. 2 is a rear view with the parts in the position they assume when the handle is pulled, and Fig. 3 is a section at the line x w.

Thefront or face plate ais of any desired ornamental character; through itis a morlise that receives the side plates b b, that have flanges c at the back of the plate a, secured by rivets or screws, or by the clamping-buttons d. Upon one of these side plates are the gudgeons e and i, the ends of which enter recesses in the other plate. Upon the gudgeon e, and between the plates b b, is the pull-lever j', of

suitable size and shape to till the space between the plates b b, and there is an'ornamental end or knob, g, to said pull-lever f.

and the other end is fastened to the wire leading to the bell. It will now be evident that the segmental pulley m is moved in the `same direction as the pull; but in consequence A d of the difference of leverage, the periphery of the segment moves faster than the pull-lever, and swings forward into the curved back of that lever, drawing rapidly upon the bellwire.

I claim as my inventionl. The segmental pulley m, connected by the link l with the pull-lever f, and acting upon the cha-in 'n with an accelerated motion, substantially as and for the purposes set forth. i

2. The side plates b b, with the gudgeons et' introduced within the mortise in the plate a, and receiving between them the pull-lever f and segmental chain-pulley, substantially as set forth.

Witnesses:

CHARLES PEGK, JOHN R. SLOAN.