US2053102A

US2053102A - Relay

Info

Publication number: US2053102A
Application number: US712688A
Authority: US
Inventors: Ralph L Palmer
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1934-02-24
Filing date: 1934-02-24
Publication date: 1936-09-01
Anticipated expiration: 1953-09-01

Description

Sept. 1, 1936. R1 PALMER 2,053,102

RELAY Filed Feb. 24, 1934 I NEENTQ ATTORNEY Patented Sept. 1, 1936 I UNITED STATES PATENT OFFICE RELAY Ralph L. Palmer, Endlcott, N. n, assignor to International Business Machines Corporation, New York, N. Y., a. corporation of New York Application February 24, 1934. Serial No. 712,688

1 Claim.

This invention relates to relays and more particularly relays of the type used in controlling the operation of electric accounting machines.

The main object of the invention is to provide 10 around the outside of the tube. With this arrangement, the contact points are efiectively protected against dirt, oil, etc., which might otherwise accumulate on the contact points and interfere with the proper operation. This arrangel5 ment also serves to reduce the possibility of arcing at the contacts and, due to the absence of gases within the tube, there is no wear on the contact points themselves.

Various other objects and advantages oi the 20 invention will be obvious from the following particular description oi one form of mechanism embodying the invention or from an inspection of the accompanying drawing; and the invention also constitutes certain new and novel features oi 25 construction and combination of parts hereinafter set forth and claimed.

In the drawing: .Fig. 1 is a central section of the complete relay. Figs. 2, 3, and 4 are sectional views taken on 30 lines 22, 33, and 4-4, respectively, of Fig. I.

The contacts and cores of .the relay are enclosed within the glass tube [0. Core H comprises a number of metallic rings supported on one end oirods l2 and core l3 comprisesa num- 35 be: of rings secured at the opposite ends of rods l2. A rod I4 mounted in core I! serves as a pivot for armature I5 upon which are mounted spring contact blades it, which normally occupy the position shown. The free end of blade l6 coop- 4 crates with fixed contact points I1 and it. These contacts are integral with insulated disks I! and 20, respectivelynwhich are supported by rods 12 and insulated from one another. In Fig. 2, two sets of contact points are shown and separate 4 insulated disks are provided for the separate points. Each of the disks is provided with a terminal 2| which iswired to leads "extending through the seal of the tube to contacting prongs 23 through which connections are made to the machine devices to be controlled. After the contact assembly has been inserted in the tube to, it may be secured in place by spot blasting at sev- 5' eral points, such as 24, to hold the parts in position within the tube. The coil or winding is indicated at 25 and is contained within a casing 26 which is adapted to fit over the base 21 as shown.

Windows or openings 28 are provided so that the contact points may be observed without removing the casing 26. The leads from the winding 25 may also be arranged to terminate in two of the prongs 23 so that all connections between the relay and the circuits of the machine with 5 which it is to be associated are made through this medium and the inclusion of the relay in the machine circuits is reduced to a simple matter of inserting the prongs 23 in a suitable socket. The rings of core l3 (Fig. 3) have a flat surface which is spaced from the free end of armature l5 to provide an air gap 29.

While there has been shown and described and pointed out the fundamental novel features of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may bemade by those skilled in the art without departing from the spirit of the inven- 30 tion. It is the intention therefore to be limited only as indicated by the scope of the following claim.

What is claimed is as follows:

A replaceable relay comprising in combination, an evacuated tube, a casing enclosing said tube, contact prongs extending from said casing, a pair of spaced pole pieces within said tube, an armature pivoted to one of said pole pieces, the free end of said armature being adapted to 40 extend within an opening in the other of said pole pieces, contact points carried by said armature, said contacts being connected to said prongs, and a winding encircling said tube and lying within said casing.

RALPH L. PALMER.