US70755A - Impeoved machine foe tempering - Google Patents

Description

- 2 Sheets-8heet 1, J. SMALL.

Machine for Tempering Saws, Files, 6L0.

Patented NOV. 12, 1867.

NO.v 70,755.

Lithographer. Washington. 0 c.

N. PEKERS. Photo- 2 Sheets Sheet 2'. l. SMALL.

Machine for Tampering Saws, Files, &c No. 70,755. Patented Nov. 12; 1867.

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JOHN SMALL, 0F vs'r. LOUIS, MISSO URI.

Letters Patent No. 70,755, dated November 12, 1867.

IMPROVED MAGHINE FOR TEMPERING FILES, SAW- BLADES, AND OTHER ARTICLES.

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TO ALL WHOM IT MAY CONCERN Be it known that I, JOHN SMALL, of St. Louis, in'the county of St.-Louis, and State of Missouri, have 'invcntcd'a new and improved Machine to be Used in Tempcri ng Files and Saw-Plates; and I do hereby declare that the following is a full, clear, and'exact description thereof, reference being had to the accompanying drawings, making a part of this-specification, in which- Figure 1, sheet 1, is a longitudinal section taken vertically through the machine, in the course indicated by red line m min fig. I I 1 Figure 2, sheet 1, is a. top view of the machine. Figure 3, sheet 2, is an elevation of one end of the machine. Figure 4', sheet 2, is a back view of one of the clamping-plates. Similar letters of reference indicate corresponding parts in the several figures. This invention relates to certain novel improvements on machinery for tempering files, saws, and other plates, which were secured to me by Letters Patent, hearing date on the fifteenth day of August, 1865, wherein the plates to be tempered and straightened were confined between two ribbed clamping-jaws, during the opera- I tion of cooling them in a liquid bath, so that said plates were thereby prevented from warping.

The invention and improvement provide for constructing the vessel in which the plates are immersed in a liquid, either wholly or partly of glass, or other transparent substance, sothat, when water is used as the cooling bath, the operation of tempering can be seen, and the plates removed at the propertime from the bath.

.It also provides for the use of a hinged apron, applied to one of two clamping-jaws, and so operated as to form a support for the files or plates before and after they are tempered, and also as a conductor'for' delivering the files orplates from a furnace into the space between the clamping-jaws. p

It alsoprovides for the use of hooked rods working between the clamping-jaws, and operated, as will. be hereinafter described, for the purpose of delivering the files or plates between the said jaws, supporting them 'while in this position, and serving asa; convenient means for delivering the tempered plates upon a hinged apron to be removed from the machine. a

It finally provides for moving both blamping-jaws towards and from each other simultaneously and in parallel planes, by means of right and left-hand screws, controlled and operated by a single vibrating arm or lever arranged outside of the bath-chamber, asfwill be hereinafter described. a

To enable others skilled in the art to understand my invention, I will describe its construction and operation In the accompanying drawings, A represents a box or vessel, within which the files or plates are clamped,

and firmly held during the process of tempering them. This box may be made of glass plates, but I prefer to construct it of wood or metal, or of both of these materials combined, andmake openings through its sides and bottom for the reception of glass plates, B, as shown infig. 1. These glass plates should be secured tightly around their edges, and properly sealed, so as to prevent leakage. The object of using glass is to allow the attendant to witness the process of tempering, when water is used as the bath for the immersion of files. .The

glass sides and bottom to the box ,or bath will admit light into it, and allow of the inspection of thecontents I of the bath. Oneof the sides of the box A is inclined in a plane parallel to a partition, 0, which latter, with the inclined side of the box, forms the chamber in which the operation of-tempering is conducted. Within this chamber two clamping-jawml) D, are applied, and supported in planes parallel to each other, by means of four screw-shafts, E E E E, each one of which has a right and left-hand screw-thread upon it. These shafts have their hearings in the front and rear'sides or'ends of the box A, and pass through stuffing-boxes a a which are applied to the partition (3.. On those ends of the shafts E, which extend through and project from one end of the box A, pinion spur-wheels b b are keyed, all of which are of the same diameter. These pinions Z2 engage with a large spur-wheel, F, upon a short shaft, 0, as shown in fig. 3, to which spur-wheel a hand-lever, F, is secured, by vibrating which the fourscrew-shafts can be rotated toward the right and loft. Those ends of the shafts E, opposite the ends carrying spur-wheels 6-6, have their hearings in boxes cl d, which are secured tightly to the inclined end of the box A, as shown. The right-hand screw-threads of the four shafts E are tapped through lugs e e, formed on the ends of the jaw D, and the left-hand threads upon said shafts are tapped through lugs e e', which are formed on the ends of the clamping-jaw D. The holes'through the several lugs of the two clamping-jaws D D are made in such manner that these jaws will be supported in inclined plane's parallel to each other, as shown in fig. 1. The jaws D D are made of castiron, somewhat after the manner of fire-grates, that is to say they are made up of parallel bars, with spaces between them, which bars are strengthened, so as to resist strain, by means of cross-ribs ff, as shown in figs. 1 and 4. Through the upper end of the jaw D a number of holes are made, through whichrods g g pass, carrying on their lower ends hooks, and attached at their upper ends to a cross-head, 9. To this jawl) astandard, H, is secured, which projects upward a suitable distance above the jaws, and carries near its upper end pulleys hh. Over one of these pulleys a rope or chain, 1', passes, which is connected to the cross-head 9, so that, by means-of the i'ree end of this rope or chain, the

- attendantr an draw up the hooked rods 9, and discharge the files or plates which'may be between the two clampingjawsf The rods gwork in the spaces between the bars of the clamping-jaw D, andthe hooks on the lower ends extend across the space between the two jaws D D,as shown in fig. 1. To the uppercnd of the jaw D a plate, J, is hinged, which is equal in width to this jaw, and which is so hinged that, when raised to the position shown in fig. 1 in black lines, its upper surface will be in the plane of the clamping face of its jaw. To the outer or free end of this plate J short chains are fastened,which are attached to a cross-head, j. To the centre of this cross-head a rope or chain,'k, is attached, which passes over one of the pulleys at the upper end of the standard H, and is used for raising or lowering the plate J. The rope or chain k, as well as the rope or chain 2', is loaded by a weight, for the purpose of counteracting the weights on the opposite ends of these ropes or chains.

When the clamping-jaws D D are separated for receiving a saw or file between them, the plate J is brought to a horizontal position, indicated in red lines, fig. 1, so as to receive the work to be tempered from the furnace. The work beingproperly put upon the plate J, this plate is raised to the position shown in black lines, and the work delivered upon the hooks. of'rods g. These rods are then lowered, and the jaws brought firmly together. In this manner the files, or other plates or blades to be tempered, are subjected to a bath of water or oil in the box A. When the tempering process is complete, the jaws D D are separated, and the tempered article or articles drawn up by books on rods 3, and delivered upon the plate J, in the position indicated in black lines in fig. 1. This plate J is then lowered to a horizontal position and the work removed from it By having the weight on the rope or chain, which is attached to the cross-head of hooked rods 9, very little heavier than the weight of these hooked rods collectively, the articles which are to be tempered, coming upon said hooked rods, will of themselves descend into the bath between the clamping-jaws.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a machine, which is adapted for tempering files or plates, and confining them between clamps during the tempering process, I claim constructing the boxcontaining said clamps wholly or partly of glass, substantially as described. h

2. The construction of the grated clamps l) "D, with bracing ribs upon their backs, in combination with double-acting screw-shafts for moving these clamps, substantially as described.

.3. The arrangement of the clamps D D in inclined planes within a bath or box, A, and upon double-acting screw-shafts E, operated and operating substantially as described.

4. The hinged plate or apron J applied to the jaw D, in combination with movable hooked rods g, substan tially as described. 7

5. The standard H, provided with pulleys 71 it upon its upper end, over which ropes or chains pass, which are attached to the hinged apron J, and also to the cross-head of hooked rods 9, substantially as described.

' J OHN, SMALL.

Witnesses:

D. H. Narrow, FRANK FILLEYS.

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