US1526818A - Electrical connection for oven elements - Google Patents

Description

Feb. 17. 1925.

J. H. ALLEN ELECTRICAL CONNECTION FOR OVEN ILEIENTS Filed Oct. 16. 1923 Inventor Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

JOHN H. ALLEN, OF LONDON, ONTARIO, GANADA, A SSIGNOR TO THE MOCLARY MANU- FACTURING COMPANY, OF LONDON,

CANADA.

ELECTRICAL CONNECTION FOR OVEN ELEMENTS.

Application filed October 16, 1922. Serial No. 594,852.

To all whom it may concern:

Be it known that I, JOHN H. ALLEN, a subject of the King of Great Britain, and resident of the city of London, county of Middlesex, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Electrical Connections for Oven Elements, described in the following specification and illustrated in the accompanying drawings, that form part of the same.

The objects of this invention are to overcome the dilficulties in connecting oven elements with the wiring terminals and to devise a form of connection which will enable the element being completed before being placed in osition and providing a construction whic will allow of the element be readily withdrawn at any time without disturbing the rigid electric contacts.

A further object is to enable the electrical connections to be completed from the exterior of the oven structure.

The principal feature of the invention 7 consists in the novel construction and arrangement of parts whereby a plurality of electrical contacts rigidly secured to the removable heating element are adapted to enter fixed contacts arranged in the oven wall in a position accessible from the exterior.

In the drawings, Figure 1 is a horizontal sectional view through my improved contact.

Figure 2 is a vertical sectional view, and

Figure 3 is an outside elevational view.

In the construction of electrical stoves it has always been a diflicult matter to connect the oven elements with the electrical terminals as the interior of the oven is small and difiicult of access and it is very important that the contacts should be very securely fastened because looseness causes arcing and overheating with the consequent destruction of the terminals.

Further, it is important that the contacts should be kept free from the steam and grease which permeate the oven and on account of the nature of the heating elements it is desirable that they should be easily and airs.

the screws 3. The strips 2 are provided with binding screws 4 to which the heater elements are connected and the outer ends are preferably turned at right angles forming parallel blades 5.

The oven wall 6 is formed with a recess 7 open at the outer side and having a rectangular shaped hole through the inner wall in which is fitted an insulating block 8 secured by bolts 9. This block is formed with slots 10 which are adapted to receive the contact blades 5, being preferably shaped with flaring openings 11 at the inner side.

Secured to the outer side of the block 8 are a plurality of metal strips 12 which are rigidly fastened to the block by thescrews 13. The strips are formed with slots 14 registering with the slots lO'in the block and at each side of the slots is formed a sprin finger 15. These spring fingers are adapted to engage an electrical contact with the blades 5 and thus form a very positive connection to the heater element.

The strips 12 are provided with binding screws 16 to which the electric leads are connected. These leads will of course be readily accessible from the outside of the oven.

The recess 7 is preferably covered by a suitable insulating plate 17 and insulating strips 18 are arranged between the strips 12. The several contacts are thus completely insulated, the one from the other and the en-. tire connection is ready.of access and may be handled with the greatest ease and safety.

Electrical connections may be made independent of the oven elements and the oven elements may be placed in position and re- 2. An electrical connector for oven eiements, comprising a block of insulating material having slots therethrough, s rin contact members secured to the heel 0 said block either side of each of said slots and having suitable terminals, and rigid contact quickly removed for re In order to accomplish this, I have secured to the heater element an insulating block. 1 which carries the terminal contacts 2. These are here shown in the form of flat 55 metal strips rigidly secured to the block by strips secured the heater element and adapted to pass through said slots and-"engage the sprlng contacts.

3. An electrical connector for oven elements, com rising flat metal strips rigidly secured to t e heater element, an insulating block having slots extending therethrough, a plurality of plates secured to the outer

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