US753369A - A corpo - Google Patents

Description

PATENTED MAR. l, 1904.

N W. GRANDALLi BELL.

APPLICATION FILED our. 29, 1903,

N0 MODEL.

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ATTORNEY UNITED STATES.

Patented March 1, 1904.

PATENT OFFICE.

NATHAN W. CRANDALL, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE RUSSELL & ERVVIN MFG. CO., OF NEW BRITAIN, CONNECTICUT, A CORPO- RATION OF CONNECTICUT.

BELL.

SPECIFICATION forming part of Letters Patent No. 753,369, dated March 1, 1904.

Application filed October 29, 1903. Serial No. 179,020. (No model.)

To all whom it may concern:

Be it known that I, NATHAN W. CRANDALL, a

, citizen of the United States, residing at Meristroke.

den, in the county of New Haven, State of Connecticut,have invented certain new and useful Improvements in Bells, of which the following is a full, clear, and exact description.

My invention relates to improvements in bells, and particularly to a mechanical construction which is to be operated by a pushbutton or the like. i

The object of the invention is to construct abell mechanism of such a form that its manufacture may be economical and that it shall be efiicient and reliable in operation and easy to install.

The invention consists in mounting the bell upon a post and in using in conjunction with this post a spring-controlled operating mem ber engaging with gears which operate the striking mechanism, so as to give a repeated an inspection of the accompanying sheet of drawings, 1n wh1ch Figure 1 1s a cross-section and side elevation of a bell embodying the improvements of i of the striker.

my invention attached to a support. Fig. 2 is a rear elevation of thebell portion, together with the supporting-post. Fig. 3 is a detail showing the supporting-post and operatinggears.

1 indicates the base, which is formed to correspond with the shape and size of. the bell.

2 is the bell proper, and 3 is the supporting-post, which is screwed into the base 1 and passes through a hole in the bell 2, where it is held in place by the cap-nut 4.

The operating parts are centered and supported about the post 3 by means of the frame 5, which is held in place against the inside of the bell by a shoulder on the post.

6 is a shaft which carries the spring-arm 7 8 is a' double-armed pawl or seesaw which is mounted on this shaft 6 and which gives to the striker-arm a vibratory movement.

9 is a second shaft carried by the frame 5, which supports the two gears 10 and 11 for The details will be understood from These two gears 10 and 11 are formed simply as segments and preferably stamped out from one sheet of metal, the parts being united by the bar 12. These two gears are loose on the shaft 9, but are held in their proper position by the engagement of the gear 11 in a slot in the post 3.

Cooperating with the post 3 is the plunger 13, which is adapted to be reciprocated and transmit motion to the gears. This plunger is formed with annular ridges or teeth with indentations between them, so as to be, in effect, a rack cylindrical in cross-section.

1a is a spring which holds the plunger in its position shown substantially as in Fig. 1.

The base of the bell is adapted-to be secured to a support, as 15, through which a button 16 of suitable construction passes for cooperationwith the plunger 13.

The parts may be easily disassembled by removing the cap-nut a or by removing the bell and post 3 from the base 1.

The frame 5 is preferably of sheet metal and has the sides bent up into suitable formation to support the. two shafts 6 and 9 and form bearings therefor. It has an irregularshaped opening to seat the post 3.

The bell is operated by the reciprocation of the plunger 13, which movement is transmitted by the gears 10 and Hand causes'a rapid vibration of the striker-arm and hammer.

The bell will be seen to be compact and to contain all the operating elements within itself. This adapts the bell particularly for general use in sale and ready installation.

What I claim is 1. A mechanism of. the character described comprising a bell, a tubular post forming a support for said bell, a plunger in said post, a spring therefor, a striker, a gear projecting through a slot in said post and engaging the reciprocating member, and a second gear formed integrally with said first gear for giving a vibratory motion to the striker-arm.

2. A mechanism of the character described comprising a bell, atubular post forming a support for said bell, a base for supporting said post, acap screw-threaded on the outer end of said post for holding the bell in place, said post being secured to the base by a screwthreaded portion, a vibratory striking device mounted Within said bell, a reciprocating member inside of said post, a removable spring for said member held in place by said cap and means for connecting the reciprocating mem ber and the Vibratory device. 3. A bell, a post-support therefor, a vibratory striking device, a reciprocating member coacting with said post, and a pair of gears formed from an integral piece of metal, one of said gears engaging said reciprocating member and the other of said gears engaging the striking device.

Signed at New Britain, Connecticut, this 27th day of October, 1903.

NATHAN W. CRANDALL.

Witnesses:

M. S. WIARD, F. E. SUNBURN.

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