US335551A - webster - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

J. P. WEBSTER. TEMPERING MACHINE.

No. 335,551. Patented Feb. 2, 1886.

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J. F. WEBSTER. TEMPBRING MACHINE.

No. 335,551. Patented Feb Z, 1886.

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TEMPERING MACHINE.

No. 335,551. Patented Feb. 2, 1886.

UNITED STATES FArsNr FFICE.

JOHA F. \VEBSTER, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE CHAMPION BAR AND KNIFE COMPANY, OF SAME PLACE.

TEMPERING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 335,551, dated February 2, 1886.

Application filed August 2-1, 1885. Serial No. 175,241. (No model.)

chines, of which the following is a specification.

My invention relates to temperi ngmachines, the object of my invention being to provide a re machine whereby articles of steel may be tempered to any desired degree of hardness, the machine being especially adapted for tempering sections of sickles or mowing-machine knives.

1 In the methods heretofore employed for tempering knife or sickle sections great trouble has been experienced in drawing the temper evenly, so that each section shall possess a uniform temper throughout, and the different see tions be of the same degree of hardness. In some of the methods heretofore employed each section, after being hardened, is tempered separately, the temper of each individual section being determined by the workman. This 2 5 process is not only slow, but is also uncertain, as the most expert workman will vary from the standard, getting some a little too high and some a little too low. In other cases the sections have been packed on end in series on 0 a supporting plate or carriage, and then run into a furnace, where they are gradually heated until the required temper is obtained. Sec tions thus tempered,however, will vary largely, as it is impossible to get an even heat through 3 5 out all parts of the furnace.

In my improved device I use a revolving case or holder supported upon a movable carriage, and adapted to be moved at will into or out of a furnace or heating chamber and re- 0 volved therein. The sections or other articles to be tempered are placed in the revolving holder with a quantity of fine sand or other suitable material,and are slowly revolved until all the sections are evenly heated to the re- 5 quired temperature. An opening in the center of the case or holder is adapted to come opposite a door in the heating chamber, through which a section may be secured at any time to determine the state of temper.

My invention consists in the constructions and combinations of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation view of an arrangement of mechanism embodying my invention. Fig. 2 is an end elevation view of the same, shown partly in section. Fig. 3is an end view of the case or holder, shown open. Fig.4 is a longitudinal sectional view of the revolving case and carriage, showing the method of discharg- 6o ing the sections from said case. Fig. 5 is a sectional View of the furnace, and Fig. 6 is a detailed view of a removable stop therefor.

Like parts are indicated by similar letters of reference throughout the several views.

In thesaid drawings, A represents the furnace, and B the revolving case or holder. The furnace is provided with a fire-box, A, an ash-pit, A and an upper heating-chamber, A into which the holder is adapted to be moved. The heating-chamber A is closed at one side by a sliding door or bung, A, which is supported by a weighted rope running over sheaves or pulleys at the top of the room. This sliding door A is adapted to be raised when desired, and thus open the entire side of the heating chamber A. The case or holder B is secured on the end of a shaft, a, which revolves in suitable bearings on a carriage, O.

The carriage 0 consists ofa frame supported on four carrying-wheels, b, which run on suitable tracks, b If. The shaft a is supported at the rear in ajournal'box, a, of ordinary construction, but is preferably supported in front by two small bearing-wheels On the carriage 0, parallel with the shaft a, is a counter-shaft, d, on which are secured a pulley, d, and a spur-pinion, (P.

On the shaft a is secured aspur-gear, a adapted to engage with the teeth of the pinion (P, so that any motion of the pulley d or shaft (1 is transmitted to the shaft a and the case or holder B.

The case or holder B is preferably made of cast-iron, and is secured on the end of the shaft a by means ofasleeve, a", ofsome length, so that the said case extends out some little distance from the carriage O, and thus comes opposite the opening in the chamber A, the I00 tracks b If, on which the carriage runs, being extended behind the furnace A.

In the rear wall of the chamber A is a slotted opening, e, adapted to receive the sleeve a when the holder B is moved into the heating-chamber by running the carriage 0 along the tracks.

The shaft d receives its motion through the medium of a belt, f, from a pulley, f, on a counter-shaft, J, at the ceiling, which in turn is run by a belt from the line-shaft, the counter-shaft being provided with loose and tight pulleys in the ordinary manner.

Journaled on the counter-shaft f on each side of the pulley f, is a tightener-frame, D, provided on either side with three arms, h h If. At the ends of the two shorter arms, h h, are journaled tighteningpulleys h h which bear against the respective sides of the belt f. To the longer arm of the frame is attached a weight, h, which tends to press the pulleys h 11* against the belt and keep it stretched at all times, no matter what position the carriage C may occupy along the tracks 1) b Attached to the front end of the carriage C is a rope, k, which passes under a small sheave, 70, secured to the front of the track-frame, thence up over a sheave, k, on the countershaft 1, and down on the other side of said shaft to the rear end of the track-frame, where it is loosely attached in any suitable manner.

The case or holder B is provided with a cover, B, in which is a central opening, B The cover 13 is secured in place on the holder by bolts Z, which pass through lugs Z Z on the cover and holder, respectively. One of the bolts Z is adapted to act as a pivot on which the cover turns when the other bolts are loos- "ened. For this purpose the lugs Z on one side of the cover are slotted, which will permit the cover to swing free of the said bolts when loosened, the lugs Z on the other side of the holder being made open or slotted, to allow the bolts on that side to free themselves from the lugs as the cover is swung around, as shown in Fig. 3.

The cover B is provided in the face thereof with a ring, 12, adapted to be engaged by the hook on a small movable pulley, n, by means of which the cover may be readily removed while hot, .to discharge the articles contained in the holder.

The furnace is provided with the customary fire and draft doors, and is also provided with a door, 0, which opens into the chamber A opposite the opening B in the cover of the holder, when the said holder is placed in the chamber A"..

The operation of the machine is as follows: The case or holder being withdrawn from the furnace with the cover B thereon, a quantity ofsand or other material is shoveled in through the opening B. The knife-sections or other articles, having been previously hardened, are then inserted and more sand added until the holder is filled almost up to the opening B The holder is then started to revolve, after which it is moved into the chamber A by pulling down on the rope is, the friction of the revolving sheave k on said rope being adapted to draw the carriage forward with very little power applied by the operator. After the holder is placed in the furnace the chamber A is closed by the sliding door A", and a sliding stop, 0, inserted in the slotted opening 6 around the shaft a. i The carriage O is held against longitudinal movement along the tracks in any suitable manner, and the holder left to slowly revolve in the heatingchamber A. The articlesin the holder may thus be beat ed to any desired degree of temperature, the sand and the continual revolving serving to distribute the heat evenly to the entire lot. The state of the temper of the revolving articles may be determined at any time by opening the door 0 and removing one of the articles by the aid of a pair of tongs or other suitable means inserted through the opening B". When the articles have reached the required temperature the chamber A is opened and the case or holder run out therefrom. After being moved out of the heating-chamber, the case or holder is stopped from revolving, and the cover, as before described, is swung open after loosening the-bolts. A screen, E, is placed under the case orholder, as shown in Fig. 4, and the contents of the holder are discharged on the screen. The meshes of the said screen are such that the sand will pass through, allowing the other articles to slide down to the foot of the screen, thus making a complete separation, the sand beingin one pile and the tempered articles in another. As soon as the holder is discharged, another quantity of sections is introduced therein,the same sand being used as before. The operation is then repeated. It will be seen that by this arrangement a large quantity of sections or other articles may be quickly and evenly tempered, the sand andthe revolving holder being adapted to distribute the heat of the furnace uniformly throughout the entire lot. By the construction of the case or holder as described, and the use of the screen E, the articles may be readily discharged in a screened condition, leaving the sand in a condition for use. The discharging and filling of the case may thus be accomplished in so short a time that the sand and case will not have had time to cool. before the said case, containing a new load, is ready for the heating-chamber. The driving mechanism, in connection with the movable carriage, as above described, permits the case or holder to be moved into or out of the heating-chamber as often as desired during any one operation of tempering. The central opening in the case or holder, in connection with the door in the heating-chamber, affords access at all times to the interior of said case, so that the exact shade of temper drical cases containing articles to be tempered through the heating-chamber; also that a receiver has been employed in connection with a heating-furnace, which, while in the furnace, is adapted to be connected to and disconnected from revolving mechanism. I do not, therefore, claim these constructions; but

Vhat I do claim is- 1. The combination, with a heating-chamher, of a case or holder mounted on a traveling carriage, said case being adapted to be revolved on said carriage and be moved into and out of said chamber as desired, substantially as and for the purpose set forth.

2. The combination, withthe heat-ing-chamher and the traveling carriage, of a revolving case or holder mounted on said carriage and partly filled with sand or other suitable ma terial, said case being adapted to be drawn into or out of said chamber and be revolved therein, substantially as specified.

3. The combination, with the furnace having aheatingchamber therein, ofthe revolving case or holder mounted upon a traveling carriage and adapted to be moved into and revolved within said chamber, a door in said chamber, and a central opening in said case, said opening being adapted to come opposite said door when the holderisin the said chant ber, substantially as set forth.

4., The combination, with a revolvingholder mounted upon a traveling carriage, ofa remov able cover for said holder, provided with an opening therein at or near the center of rotation of said case, substantially as set forth.

5. The combination,with a heating-furnace, of a revolving holder mounted upon a traveling carriage, by which it is adapted to be run into or out of said furnace during the operation of heating, and means for revolving said holder in any position of the said carriage, substantially as specified.

6. The combination, with the furnace and revolving holder, of a traveling carriage for supporting said holder, mechanism on said carriage for revolving said holder, a belt adapted to connect the said mechanism with a counter-shaft, and a tightener device for said belt, substantially as specified.

7. The combination, with a traveling carriage, of a sl'iaftjourualed thereon, a case or holder secured on the end of said shaft and provided with a central opening therein, a counter-shaft over said carriage, and means for transmitting motion from said shaft to the holder, whereby the holder may be revolved in any position of the said carriage, substantially as set forth.

8. The combination of a furnace having a heating-chamber therein, said chamber being provided at the front with a door, 0, and at the rear end with a slotted opening, 6, a carriage adapted to run on suitable tracks behind said furnace, a revolving shaft journaled 011 said carriage and at one end extended out beyond the frame of said carriage, a case or holder secured on the extended end of said shaft and provided with a removable cover having an opening therein concentric with the said shaft, said holder being adapted to enter the chamber of the furnace, thus bringing the central opening in the cover thereof opposite the door 0 and the holder-supporting shaft into the slotted opening 0, a sliding door for closing said chamber around said holder, and a movable stop for closing said opening around said shaft, substantially as specified.

In testimony whereof I have hereunto set my hand this 3d day of August, A. D. 1885.

JOHN F. \VEBSTER.

Witnesses:

PAUL A. STALEY, F. B. FURNISS.

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