US1756584A - Material conveyer for furnaces - Google Patents

Description

April 29, 1930. F. T. COPE 1,756,584

MATERIAL CONVEYER FOR FURNACES Original Filed Jan 5, 1927 Patented Apr. 29, 1930 UNITED STATES PATE NT OFFICE FRANK T. COPE, OF SALEM, OHIO, ASSIGNOR TO THE ELECTRIC FURNACE COMPANY,

OF SALEM, OHIO, A CORPORATION OF OHIO MATERIAL CON VEYER FOR FURNACES Original application filed January 3, 1927, Serial No. 158,516. Divided and this application filed November 30, 1928.

The invention relates to mechanism for conveying material through furnaces and more particularly to a conveyer apparatus for feeding smallirregular shaped articles through a heat treating or annealing furnace at a uniform speed, and this application is a division of my copending application for material conveyers for furnaces, filed Jannary 3, 1927, Serial No. 158,516.

In annealing or heat treating articles such as bolts, rivets and other like irregularly shaped articles, difiiculty; has been experienced in uniformly feeding the articles through the annealing furnace. Attemptsc have been made to accomplish uniform feeding of the material by inclining the hearth and providing pusher means for passing the articles down the inclined hearth, but such apparatus has not proved successful, it 'being found that where the incline is sufficiently great to permit the articles to slide through .the furnace the speed of movement of the articles cannot be uniformly controlled, and where the incline is lessened sufficiently to overcome this difliculty there is a tendency for the articles to stop before they reach the end of the furnace hearth.

The object of the present improvement is to overcome the above difficulties by providing a pusher 'conveyer means in combination with a furnace hearth whereby the articles are continuously conveyed through the furnace step by step at a uniform rate of I support for the articles to be heate theartispeed; and by providing pawls for engagement with the articles whereby the articles are prevented from being moved in all the directions in which the pusher conveyer'is moved.

The above and other objects may be attained by providing a reciprocatin conveyer cles being moved in one direction with the support with each forward reciprocation thereof, and means being provided for preventing the articles from returning with the back stroke of the conveyer support.

An embodiment of the invention is illustrated inv the accompanying drawings, in which Figure 1 is a longitudinal sectional view Serial No. 322,804.

through a furnace provided with the improved material conveyer adapted for feeding rivets, bolts and similar articles;

Fig. 2, a view similar to Fig. 1, showing a modified form of the feeding'means; and

Fig. 3, a section on the line 33, Fig. 1.

Similar numerals of reference refer to corresponding p'arts throughout the several figures of the drawings.

, Referring first to the structure illustrated in Fig. 1, the furnace lmay be of any usual and well known design and is provided with the inclined hearth 2, the ends of which are preferably extending through the charging and discharging openings 3 and 4 respectively.

The hearth is provided with spaced longitudinally disposed ribs 5 forming channels 6 therebetween of a width substantially equzal to one dimension of the articles shown at A reciprocating bar 8 is located upon the bottom of each channel and arranged to be reciprocated by any suitable means such as the lever 9 and pitman rod 10.

This pitman rod may be operatively connected to a crank arm 11 carried by a shaft 12 arranged to be rotated by any suitable gearing located in the gear housing 13 and driven as by the motor 14.

In therear position each rod is arran ed to be located, as shown in full lines in ig. 1, with its free end-15 extending a portion of the length of one of the channels 6.

With a forward movement of the reciprocating conveyor support as indicated by dotted lines in Fig. 1 the articles resting thereon are carried forwardly along the channel 6.

. For preventing back movement of the articles whenthe reciprocating conveyer support is moved backward again, there is provided one or more pivoted downwardly and forwardly inclined pawls 16 adapted to rest upon the bolts or other articles 7 and the end portions of the pawls engage the articles to 15 of the conveyer support drop into the channel 6 as shown at A.

Upon the next forward movement of-the bar the articles in the channel 6 forward of the end 15 of thereciprocating support are pushed further forward upon the hearth by the reciprocation of the conveyer support, and by further reciprocation thereof the articles finally are passed down the inclined discharge chute 17. Thus the rate of movement of the articles through the furnace is uniformly controlled, each row of articles moving slowly and uniformly downward through its channel, the foremost articles in each row being intermittently projected outofthe furnace. Any desired rate of movement of the material through the furnace may be obtained by regulating the speed of reciprocation of the bars accordingly.

The constructionshown in Fig. 2 is very similar to that shown in Fig. 1. The furnace 1 may be provided with a substantially horizontal hearth 2, the ends of which are preferably extended through the charging and discharging openings 3 and 4.

The hearth is provided with spaced longitudinally disposed ribs 5 forming channels 6 therebetween substantially equal to one dimension of the articles shown at 7 The reciprocating bar 8, however, may extend substantially the entire length of the nels and resting on the articles therein, and the end portions of the pawls engaging the articles when the bars are moved backward for preventing the articles from moving backward therewith.

In testimony that I claim the above I have hereunto subscribed my name.

K T. COPE.

' hearth and if desired a plurality of pawls 16" may be provided at spaced intervals throughout the lengthof the hearth.

This reciprocating bar 8 is located in the bottom of each channel 6 and is arranged to be reciproeated by the lever 9 and pitman rod 10 operatively connected to a crank arm 11 carried by a shaft 12 arranged to be rotated by any suitable gearing located in the gear housing 13 and driven as by the motor 14.

In this form the invention, with each forward movement of the bar, all of the articles are carried forwardly upon the bar and then as the bar moves backward the pawls 16 retain the articles in the same manner as above described, permitting this bar to slide from beneath the foremost articles, which upon the next forward movement ofthe bar are discharged down the chute 17%.

' I claim:

1. A material conveyer for furnaces in-.

their end portions extending into the chan-o I eluding a hearth provided with channels to receive articles to be conveyed through the furnace, bars located in the bottoms of the channels, means for reciprocating the bars for moving articles resting thereon, and downwardly and forwardly inclined awls mounted in the furnace having their en portions extending into the channels and resting on the articles therein, and the end portions of the pawls engaging'the articles when the bars are moved backward for preventing the articles from moving backward there with. 1

2. A material conveyer for furnaces in-

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