US891693A - Door arrangement for glass-leers. - Google Patents

Description

No. 891,693. Y PATENTED JUNE 23, 1908. A. H. HBISEY.

DOOR ARRANGBMENT POB. GLASS LEERS.

APPLICATION FILED JUNE 27,1907.

AUGUSTUS H. HEISEY, OF IDLEWOOD, PENNSYLVANIA.

noon ARRANGEMENT FOR GLASS-mans.

Specification of Letters Patent.

. Patented June 23, 1908.

Application filed June 27, 1907. Serial No. 381,140.

To all whom it may concern:

Be it known that I, AUGUSTUS H. HErsEY, a resident of Idlewood, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Door Arrangement for Glass-Leers, &c; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to leers or annealing ovens for glassware, and especially to means for opening and closing the opening through which the ware is introduced into the leer.

The object of the invention is'to provide for opening and closing the ware receiving opening automatically by the person approaching or leaving the leer, so that said opening is open only long enough to insert .the ware and is automatically closed upon the departure of the person from in front of the leer, so that there is no liability of cold air rushing into the leer and chilling the same or injuring the ware'therein.

The invention comprises, generally stated, a leer having the usual opening closed by the ordinary hinged doors provided with op'en-" ings through which the. ware is placed in the leer, said leer being provided to the rear of the hinged doors with a sliding shutter, a

depressible platform being arranged in front of the ware receiving opening of the leer and connected -to; the sllding shutter, so that a person approaching the leer to insert ware therein is compelled to step upon said platform and through the connections open the shutter, and upon leaving releasing saidplatform,-thereby permitting .the shutter to automatically close.

Inthe accompanying-drawing Figure 1 is a front view of a-leer having my invention a plied thereto; and Fig. 2 is aplan view of t e door arrangement p In the drawings is shown a portion of a common form of leer used in glass factories, the front thereofbeing shown at 2 with the walls 3 projecting out to form the recessed portion 4. The Ware receiving openings are shown at 5 and 6, these being as usual formed 1n swingin double doors 8. It has hereto; fore been t e ractice not to close said openings 5 and 6 but to allow the same to remain open to receive the ware. In case these openings are not large enough to permit the passage of large sized ware then one or both of the swinging. doors can be opened to present larger 0 enings for the introduction of the ware. The result is that drafts are liable to which is connected one arm of a lever 13,

said lever being pivoted to the bracket 14 at the corner of the projecting wall 3 and having connected toits outer end a bar or rod 15. In order to provide for adjustment the lever 13 has a series of openings 16 and the rod 15 is provided with a series of openings 17 so that the pin 19 connecting these parts may be changed to vary the leverageaccording to the height to which the shutter is to be lifted.

The lower end of the rod 15 is connected to an arm 19 secured by rivets 20 to a depressible platform 21. This platform may be formed of plate metal or other suitable material and is hinged at 22 to the floor or foundation 23. The weight of the shutter 7 when closed is sufficient to hold the forward end, of

the latform 21 at a suitable height above the oor. This. platform is, located directly in front of the ware receiving opening in the,

leer and at such 'a distance therefrom that the person carrying the war e to be introduced into the leer is compelled to step upon the platform in order to introduce the ware into the leer. This depresses the platform and the latter through the connections described raises the shutter 7 sufliciently to permit the ware to be placed upon the leer pans within the leer. As soonas the person leaves the front of the l'eer the shutter 7 through its weight'automatically drops, thereby closing the o ening to the leer. In this manner there ore the shutter is opened automatically and only when the carrier has arrived in position in front of the leer to insert the ware, so that the Ware receiving opening is i not opened before it is absolutely necessary, and furthermore said opening is closed immediately upon the departure of "the attendant from the leer, matically as described I 'effect a minimum loss or waste of heat andbreakage of ware, which, under the old form of leers, is due to the fact that'in stormy Weather direct drafts enter the leer and drive the heat so far back By operating the leer auto to close the enlarged opening with beneficial F shutter.

I both of the doors 8 may be swung opento permit the insertion of thelarge ware, the shutter 7 still acting in themanner described results in saving heat, breakage, etc.

It is apparent that various forms of connections between the depressible platform and the shutter maybeernployed and I do not wish to be confined to 'any' particular meansfor-this purpose. 1

WhatIcla'imisz e 1. The'comb' ation of a leer provided with a ware receiving opening, a vertically slidable shutter for closing said 0 enlng, a depressible platform located at the 001' directly in front of the were receiving 0 ening in the 'lineof approach of the attendant, and connections Ibetween said depressible platform and said shutter. I I

2. The combination of a leer provided with a ware receiving opening, a vertically sliding shutter ar'ran ed to close said opening, a lever connecte to said shutter, a depressible platform located at the floor difectl in front of the Ware receiving opening in t e line of approach'of the attendant, and connections senees between said depressible platform and said lever. l 3. The combination ofa leer provided with a ware receiving opening, an automatically closing shutter for said ofpeninig, a depressible platform located at the 00I'-(l.1186l3l in front of the ware receiving opening in t 'e lineof approach of. the attendant, and connections between said depressible platform and said 4. In a'leer, the combination of outside swinging doors provided with an opening leading into the leer, a vertically movable shutter mounted inside of said swinging doors and mechanism for raising and lowering said shutter. e v v 5. The combination of a leer provided with a ware receiving opening, swinging doors provided with an o ening leading into the leer, a vertically mova le shutter mounted inside of said swinging doors, a depressible platform in front 0 the leer opening, and connections between said depre'ssible platform and said shutter.

In testimony whereof, I the said AUGUsTUs HEIsEY have hereuntoset my hand;

, AUGUSTUS H. HEISEY.

Witnesses: 1 i

MAUDE Bo'r'rs, CARL NORPELL.

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