US1509097A - Electric heater - Google Patents

Description

- 1,509,097 W. J. BISSET ET AL ELECTRIC HEATER I Filed Jung 1 9, 1922 4 She ets-Sheet 2 7 IIVVENTOR.

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Sept. 23-, 1924.

w. J. BISSET ET AL ELECTRIC HEATER Filed June 19 1922 4 Sheets-Sheet 5 .l l I lllllll rl.

lillllll Sept. 23, 1924. I 1,509,097

w. J. BISSET ET AL ELECTRIC HEATER Filed June 19, 1922 4 Sheets-Sheet 4 I I I I I I I I 7 w i/VVENTORS Mm (W flTTORNEY Patented Sept. 2 3, 1924.

UNITED STATES PATENT oFFicE.

iTALL ACE J'- IBISSE'I, OF BLOOMSBURG, AND MORRIS S. EVANS, OE BERWICK, PENNSYL VANIA, ASSIGNORS TO AMERICAN CAR AND FOUNDBY'COWANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

' ELECTRIC HEATER.

Application filed June 19, 1925?. Serial 569,287.

.T all whom it may concern:

- Be it known that we, WALLACE J. Brsslrr and Monms S. EVANS, residing at Bloomsburg, Columbia County, Pennsylvania, and

Berwick, Columbia County, Pennsylvania, respectively, and being citizens of the United States, have invented certain new and useful Improvements in an Electric Heater, of which the following is a full,

1 clear and exact description, such as will enable others skilled in the art to which it appertains to make and to use the same, reference being had to the accompanying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is'obvious that various modifications thereof within the scope of the 2 claims will occur to persons skilled in the art.

, In said drawings:

Fig. 1 is a side elevation of our improved heater;

Fig.2 is a front elevation of our improved heater, parts "being broken away to show other parts more clearly;

Fig. 3 is a plan view of the movable stops, detached from the rest of the heater 30.- structure;

Fig. 4 is a side'elevati'on of a modified form of our device;

Fig. 5 is a front elevation of the structure shown in Fig. 4; and

Fig. 6 is a top plan view, drawn to a larger scale of the structure shown in Fig. 4.

It is an object of our invention to provide an improved electric heater which shall be capable of heating stock of different lengths and it is also an object of our invention to provide means by which the electrodes may be readily adjusted to accommodate the diiierent lengths of stock. It is also an object of our invention to provide an improved operating means-for the electrodes and it is also an object of our invention to provide a heater in which current from two sources is used to heat the 1 stock. It is also an object of our invention to provide an improved means for feeding the stock to the electrodes.

With these and other objects in view, our

invention, as shown in Figs. 1 and-2 comprises an electrical heater having asupporting frame composed of spaced flanged side members 1 and 2, of irregular shape, joined by .cross members 3 secured to the iianges of the members 1 and 2. The side members may be formed in any desired manner but we have shown them as cast members formed with integral flange portions 4 and 5, respectively, upon which is mounted a channel-shaped cross member or support 6. The member 6 is provided with a row of openings 7 and serves to sup-port a pair of electrodes 8 and .9 which rest'upon insulation 10 and are secured to the support 6 by the bolts 11, also insulated from the support 6, which pass through the openings 7. The row of openings 7 serves as a means for positioning the electrodes 8 and 9 so as to accommodate stock of any length up to the limit of the apparatus.

Cooperating with the electrodes 8 and 9, I

respectively, are the electrodes 12 and 13. The electrodes are supported by rods 14 connected by insulating couplings 15 to sleeves 16 slidably mounted upon a rod 17 and held in adjusted positions upon the rod by set screws 18. The rod 17 is carried by sleeves or boxes 19 slidably mounted in slots 20 in the side members 1 and 2 and normally forced to their lowermost position by springs 21, the force of which may be adjusted by adjusting screws 22 mounted in brackets 23 which close the upper ends of the slots 20.

To operate the rod 17 an'dboxes 19 in theslots 20 there is provided at each end of the heater, a lever 24 pivotally supported by the adjacent side member as at 25, and pivotally connected, intermediate its ends, to a link 26 which has its other end pivotally connected to an end of a lever 27. The lever 27 is mounted on a shaft 28 carried by the side members 1 and 2 and has its other end rounded, as at 29, and engaging a'roller 30 mounted upon the rod 17. To permit of adjusting its length, the link 26 is formed of sections joined by a turnbuckle 31. Surrounding the rod 26 is a spring 32 which is confined between a collar 33 fixed on the" rod and a bracket 34 formed integral with the side member and through which the rod '26 passes. Connecting the levers 24 is a rod 35 which is engaged by the operator to operate the levers 24.

The side members 1 and 2 are also pro Q incense vided with inclined flanges 36 and 37 upon which is mounted a. support 38 for supporting the stock to be heated, shown in Figs. 1 and 2 as round bars 39. In order to hold the bars 39 on the support 38 and to feed them to the electrodes one at a time, movable stops 40 and 41,, adapted to project through openings in the support 38, are

provided. Thestops are movab y mounted in a guide bracket 42 formed'integral with the support 38 and are provided with racks 43 and 44, respectively, which engage opposite sides of a pinion 45 so that operation of the pinion 45 will cause one stop to be drawn below the upper surface of the support 38 and the other stop to be projected above the support. Reversing the operation of the pinion 45 will reverse the positions of the stpps. It will be noted that the stops 40 and 41 are spaced apart so that when stop 40 is retracted and stop 41 projected the rods 39 roll down the support 38 and engage the stop 41. VThen the stop 40 is projected and the stop 41 retracted, the stop 40will be forced between the two lowermost bars so that all bars but the lowermost bar will be held by the stop 40 while the retracl spaced as desired, across. the machine. The shaft 46 is operated by cranks 47 mounted tion of the stop 41'w1ll release the lowermost bar and permit it to roll down the support 38 to the electrodes. V

The pinion is mounted upon a shaft 46 journaled in the side members 1 and 2 While we have shown but one pinion 45 on the shaft 46 it is to be understoo'dthat a.

plurality of pinions 45 may be operated by the one shaft 46 and operate pairs of stops,

upon the ends of the shaft 46 and connected by adjustable links 48 to the ends of leversv 49 which are pivotally mounted, intermediate their ends, as at 50, upon the side members 1 and 2. Links 51, which pass through brackets 52 and are providedwith yoke-shaped ends having pin and slot connections with levers 24, operatively connect the other ends of the levers .49 to the levers 2 4. Springs 53, which surround the'links 51 and are confined .between the brackets 52 and collars 54 secured on the links 51,

are adaptedto return the stops40 and 41 to their normal positions.

"-To stop the rods in position on the electrodes 8 and 9 after theyhave been released .-by the retraction ojfthe stop 41, stops 55 are provided. The stops '55 are mounted upon rods 56 to which they are conected I I by insulating connectors 57. The rods are guided in openings in the support 6 and are connected to cranks 58 mounted-ona shaft 59 journaled in the side members :1

and 2. Cranks 60 mounted .ontheends of the shaft 59 connect the shaft 59 to the links 1,111 the operation of our device when their normal "so that there is an opportunity for the rods 39 to pass on to the electrodes 8 and 9 and constructed as described above, pressing down the cross bar will operate levers 24, links 26 and levers 2'? ts raise the rod 17 against the action of springs and 32 and raise the electrodes 12 and 13, the pins 61 traveling in the slots 62 in the ends 63 of the links 51 until the pins 61 engage the bottoms of theslots, the slots 62 being of suficientgwidth to permit the movement of the pin. 61, whereupon the links 51 will be operated against'the action of springs 53, op-

erating'cranks 60 to withdraw the stops 55 and permitting the bar 39, if any, held upon the electrodes 8 and 9 to roll down the electrodes and be received upon the support 6.

The rods '39 are held on the support 6 by the projecting ortions 64 of the side members l and 2or' y projections which may be provided on member 6. The operation of the links 51 also operates the lever 49, link 48 and crank 47, operating the pinion 45 andwithdrawing the stop 40 and project ing the stop 41 thus allowing the bars 39 to to I advance to. engage the stop 41. When the pressure upon the rod 35 is removed and the rod-allowed to return, the stops 55 will be.

projected into position to hold the bars upon the electrodes 8 and .9 and the stop 40 is projected. between the two lowermost bars,

- olding all save the lowermost bar while the stop 41 is withdrawn and the lowermost bar releasedto roll down the support 38 on to' the electrodes 8 and-9 and engage the stops 55.. The stops 40, 41and55 are restored to posltions before the levers 24 engage thestops 55 before the electrodes 12 ion and 13 descend and engage the bar. Cur I rent for heating the bars is supplied to the electrodes through flexible conductors 65,

the source of current supply bein such that the current will pass through t e bar fromen'd to end in two paths, one path being from electrode 8 to electrode 9 and the -vertically projecting angle bars73, 74 and bar having one flange 75, 76, each angle secured to the adjacent base member and one flange cut awa so as torest upon the base member and al the bars/being arranged,

as shown in ig. 6, so that they will em- .brace the vertical edges of the rectangular laminated core 77 of a transformer 78. En-

gaging the angle. bars 73, 74, 75 and 76 are i which rest the spaced below and above the core, respective y, and

also serve to. hold the .angle bars ti htly against-the cover plates 82 which are p aced between the sides of thecore- 77 and the angle bars. Bolts 83, passing below the core 77 hold the lower portions of the plates against the core. On the upper surface of the core 77 is placed'insulatibn 84 upon A qrimary lcoils 85 of the transformer 78. 85 are placed the secondary coils 86 and 87, insulating separators 88 being placed between each secondary coil and the adjacent primary coil. 1 I

The electrode-.89 of the secondary coil 86 is adjustably supported by an insulated 20 bolt 90 from a strap 91 which is connected to" the filler members 7 9, by the bolts 81 while the other electrode 92 of the coil 86 is adjustably supported by an insulated bolt "93 from a strap 94 secured to the filler members 79. The bolt 93 engages the coil 86 a short distance 'below the e ectrode 92 while the electroden92 is yieldingly connected to an insulated strap 95, carried by the filler members 79, by a bolt 96 slidably mounted in an opening in-the strap 95 and carrying a spring 97 confined between the strap 95 and a nut 98 on the bolt 96. This construction permits the electrode 92, which is normally inclined, to move slightly when subjected to pressure, the inclination being too slight to be clearly shown in the drawing. The electrodes 99 and 1000f the secondary coil 87 are connected by,insulating connectors 101 to sleeves 102 slidably mounted on a rod 103 and normally held in fixed positions on the rod by set screws 10 1. The rod 103 is mounted in blocks 105 slidably mounted in slots 106 in guide members 107 secured to the filler members/ 79 by bolts 108. lhe blocks 105 are pressed to their lowermost positions by springs 109, the force of which is regulated by adjusting screws 110 mounted in brackets 111 which close the open ends of the slots 106. Ontheends of therod 103 are mounted rollers 112 engaged by cams 113 mounted on a shaft 114 journaled in the guide members 107 and having mounted thereon a crank115 which is connected by a link 116 to one end of a lever .117. The lever 117 is pivotally mounted in'a-bracket 118 carried by the angle bar 72 .and has a pedal 119'pivotally' connected to" its other end.

It will be noted" that the contact of the electrodes 89 and 92 with the object to beheated will complete the circuit through the secondary. coil 86 and that contact of the Y electrodes 99 and 100 with the object will complete the circuit through the secondary coil 87, the circuits of the secondary coils etween the coils V having-only the objectto be heated in commOIL"-1 Connecting the electrodes 89 and 92 to one secondary coil and the electrodes 99 and 100 to another secondary coil permits of the use of secondary coils of less current carrying capacity'than where all the elec- 'trodes are connected to one secondary coil and the secondary coils are n consequence ,muchmorereadily manufactured and re piece and reduces the tendency to arcing at Y the electrodes.

In the operation of the device shown" in i Figs. 4t, 5 and 6 depressing of the pedal 119 will operate the lever 117 and cams 113 to raise the electrodes 99 and 100 against the action ofsprings 109 to permit the insertion and removal of the stock and removal of the ressure from the pedalwill permit the spr1 ngs109"to. force the electrodes 99 and 100 into engagement witlr the stock andto holdthe stock in contact with the electrodes 89 and 92. I

It will be apparent that the source of current 'for the device shown in Figs. 1, 2 and '3 may lee similar to the transformer shown in Figs. 4:, 5 and 6 and that the transformer may be mounted on the machine frame or placed on the floor near the machine.

What we claim is:f 1.'In an electric heater, normally fixed electrodes'adapted to complete a circuit upon engagement by the stock, movable electrodes cooperating with said fixed electrodes and adapted to complete a second circuit upon I engagement with the/work and means adapted to operate said movable electrodes to I make and break said second circuit.

2. In an electric heater, normally fixed electrodes adjustable horizontally and adapted to complete a circuit upon engagement y the stock, movable electrodes adjustable horizontally to cooperate with said fixed adapted to hold said electrodes in engage Y ment with the stock heated.

4: In an electric heater, coo rating fixed V and movable electrodes, stock means and-stops adapted to position the stock on said fixed electrodes. I

In an'electric heater, cooperating fixed and movable electrodes, stops adaptedlto &

hold the stock on said fixed electrodes and operating means for said movable electrodes adapted to operate said stops to release the stock from the fixed electrodes.

6. In an electric heater, cooperating fixed and -movable electrodes, means adapted to feed stock to said fixed electrodes and oper ating means for said movable electrodes adapted to operate said stock feeding means.

7 Inan electric heater, cooperating fixed and movable electrodes, means adapted to feed stock to said fixed electrodes, stops adapted to position the stock on said fixed electrodes and operating means for said movable electrodes adapted to operate said stock feeding means and said stops.

8. In an electric heater, cooperating fixed and movable electrodes, means adapted to feed stock to said fixed. electrodes, stops adapted to position the stock on said fixed electrodes, an operating means for said movable electrodes and. an operating means for said stock feeding means and said stops having a lost motion connection with said electrode operating means.

9. In an electric heater, cooperating fixed and movable electrodes, inclinedstock sup porting means, stock feeding means adapted to release the stock on said supporting-means upon operation of said movable electrodes and stops adapted to'position' the stock on said fixed electrodes.

10. In an'electric heater, cooperating fixed and movable-..elctrodes, means adapted to feed stock to; said fixed electrodes, stops adapted to position the stock to complete'a circuit through Said fixed electrodes and means adapted to operate said movable electrodes to. complete a second circuit through said work.

11. In an electric heater, cooperating fixed and movable electrodes and means for feeding stock to said fixed electrodes comprising i a stop normally engaging the stock and adapted to release the stock and a second stop adapted to engage the stock upon movement of said movable electrodes from said fixed electrodes, said first'stop being adapted to engage and hold some of the stock and said secondst'op being adapted to release the

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