US309603A - S-tone dressing machine - Google Patents

Description

(No Model.) 4 Sheets-Sheet 11. T. H. OOOK. STONE DRESSING MACHINE. No. 309,603. Patented Deo. 23, 1884.

N. PETERS. PholLdhugmpher. Wnslvmlnn. D. C.

(No Model.) 4 Sheets-Sheet 2.

T. H. COOK.

STONE DRESSING MACHINE.

' No. 309,603. Patented Deo. 23,1884.

(No Modem 4 sheets-sheet 3.

' T. H. COOK.

w S-TONB DRESSING MAGHINB.-

No. 309,603. A Patented Deo. 23, 1884.

(No Model.) 4 Sheets-Sheet 4. T. H. CO0K. STONE DRESSING MACHINE.

Patented Deo. 23, 1884.

mM im j WITFESSES N @ZW/MW@ Attorney Unitarian tiTaTns ltaThiyT Tricia THOMAS Il. COOK, OF OVVEGO, NEV YORK.

STOhlEuDRESSlNG ACHINE.

SPECIFICATION forming part of Letters Patent No. 309,603, dated December 23, 1884.

Application and Mai-ch s1, 1884. (No model.)

To a/ZZ whom, it may concern:

Be it known that I, Tiroams II. Coon, a citizen ofthe United States, residing at Owego, in the county of Tioga and State of New York, have invented certain new and useful Improve e ments in Stone-Dressing Machines; and I do wheels, Z.

hereby declare that the following is a full, clear, and exact description of the same, reference being had tothe an'neXed drawings, making a part of this specitcation, and to the letters and gures of reference marked thereon.

Figure l of the drawings is a perspective view of my improved machine; Fig. 2, a side elevation thereof; Fig. 3, a longitudinal section; Fig. 4L, anrend view showing` the lower portion only of the machine; Fig. 5, a detail view in perspective of one of the trip'levers with its attachments.

The present invention has relation to stonedressing machines, and is designed as an improvement on my former patent, No. 237,961, dated February 22, 1881; and it consists in certain details oi' construction, substantially as shown in the drawings, and hereinafter described and claimed.

In the accompanying drawings, A repre sents the frame cl1 the maehinemrovided with tracks a, running lengthwise thereof, and upon which is mounted a frame, B, having suitable This frame B supports the carriage C, upon which the stone is placed, and at one end has a projecting rack-bar, c, engaging with a pinion, d. Upon the opposite end ofthe frame I3 is a transverse shalt, e, having rigidly secured to its projecting ends pinions j', for engaging with rack-bars g, one upon each side ol" the frame. The rack-bars f/ are suitably connected to inclined planes I), which rest upon each side of the frame l, and upon said planes rest the correspondinglyinclined sides E of the carriage C. The inclined planes are for the purpose of raising or lower ing the carriage to adapt it to stones of various thicknesses placed thereon to be dressed. By turning the red c through the pinionsf and rackbars g the inclined planes are caused to move longitudinally, and, acting against the inclined sides E of the carriage, will elevate or lower it, as circumstances may require. A hollow post, F, forms part of the frame A, and contains the upright h, rigidly secured at its top to a cross-bar, G, adapted to have avertically-sliding movement. This cross-bar G supports the ends of a series of trip-levers, II, which carry suitable knives, 7L, for cutting or dressing the stone, said cross-bar forming a stop for the levers when not stopped by the knives coming in contact with the stone. The upright h is connected to a weight, t', by means of a cord, j, extending over a pulley, '/f, for automatically raising the cross-bar G upon the release of a pin, Z, from engagement with a socket, m, in the upright. The sliding beam I, which carries the pin Z, is projected forward by a suitable spring, n, at its opposite end, so that when the socket m is in linewith said pin it will automatically engage there` with. This arrangement and construction of devices are the same as those shown and described in my former patent and act in the same manner and for a similar purpose. The backward movement ofthe beam I, to release the pin Z from engagement with the socket m, is attained by the dog o, secured to the side of the frame B, being brought in contact with a plate, J, as the carriage and frame moves along on the tracks. The plate J is adjustable upon the sliding beam I, so that it can be set at any distance within a certain limit to regulate the distance in which the carriage will travel before releasing the pin. The trip-levers H are loosely mounted upon a horizontal shaft, p, having its bearings in the sides of the frame A, and are held in place on the shaft by collars r. One end ofthe shai'tp is screwthreaded, and engages with a screw-threaded opening in the cross-beam IV of the frame A, as more clearly shown in Fig. 5. As the shaft p is turned by means of a suitable crank connected to one end, the shaft will, by means of its screwthreaded end engaging with thescrew-threaded opening in the beam XV, be caused to move in a direction transversely, carrying with it the trip-levers H, so that the cutters or knives connected thereto will traverse from or toward either side of the stone in. order to work upon any part of its surface. The levers H are each provided with an adjustable weight, K, in order to increase or diminish the force of the stroke, said levers being operated by a rotary cam-shaft, L, having the cams thereon so arranged with relation to each other that the knives will be brought down upon the stone successively.

To prevent any one or number of the knives working, the lever or levers are held suspended at their front ends by suitable drop-weights, M, which, when allowed to descend on the rear ends of the levers, will depress them and elevate the front or opposite ends carrying the knives. The weights M are held suspended by spring-catches N, the front ends being'beveled, as shown in Fig. 8, and engaging with beveled notches s in the shanks of the weight.

When it is desired to drop any one of the weights M, the spring-catch N opposite said weight is pushed back far enough to disengage the end'of the catch with the notch s in the shank of the weight by means of the thumb-piece a', Fig. 3, when the latter will fall upon the lever II and hold it from contact with the cam on the shaft L by depressing its rear end.

Iniraising the weight IIby the hand-lever O, to which itis pivotally connected, the catchy N will automatically engage with the notch s by means of the spring connected to the catch, the bevel end thereof actingin connection with the bevel portion of the notch.

To the lower end of the frame A is journaled a cone-pulley, I), having at one end, upon the outside of the frame, a pulley, t, over which passes a beltrq, said belt passing up and over a pulley, u, on the cam-shaft L. A belt, c, extends around the pulley I), thence up and around a similar cone-pulley, R, said pulleys being on the same vertical plane and having one end of their shafts in the side of the frame A, while their opposite endshave their bearings in an upright, S, pivoted at its lower end to the frame. The cone-pulley R carries a friction-wheel, T, arranged to come in frictional contact with the cam-shaft L, the object of the cone-pulleys being to vary the feed of the stone, as is desired, either slow or fast, in the operation of stone-dressing, the lower cone-pulley, as will be seen, operating or giving motion to the frame B and carriage @through the medium of the pinion d and rack-bar c. As the cross-bar Gr is thrown up by the means hereinbefore described a lever, U, connected thereto, and pivoted at its opposite end to the frame A, throws or forces back the wheel T from frictional contact with the cani-shaft L. This is accomplished by forming the outer end of the lever U with an ineline or cam, w, which bears against the upper end of the pivoted upright S, and as the cross-bar Gis elevated the cam end ofthe lever will press outward the upright, carrying with it the wheel T. Then by tightening the belt q by the pulley y, as shown in dotted lines, the conefeed is reversed, and the carriage G and frame B run back. A spring,V, connects the lever U with the pivoted upright S, so that when'the cross-bar G is pushed down the upright will be br'ought back into position to bring the wheel in frictional contact with the cam-shaft.

I am aware that cone-pulleys have hereto fore been used in forward and reversing mechanism for saw-millcarriages, consisting of two cone-pulleys operated by a belt, the shaft of one of said pulleys carrying a friction-pulley,

and having one end of its shaft supported in a movable arm, so as to bring the pulley in frictional contact with a similar pulley upon a shaft below it,which carries a pinion adapted to mesh with the rack of a saw mill carriage for the purpose of driving it forward or back. I therefore wish it to be understood that I do not claim such construction,broadly; but,

I-Iaving `fully described my invention, what soA I do claim as new, and desire to secure by Letl. In astone-dressing machine, a suitable carriage upon which the stone is placed and provided with a rack-bar, and a rotary cam-shaft for operating the knives, in combination with two cone-pulleys arranged one above the other, and having their bearings at one end in a pivoted upright, the upper one of the cone-pulleys carrying a friction-wheel adapted to come in frictional contact with the cam shaft, and the lower cone pulley having a pinion with which the rack bar engages, substantially as and for the purpose set forth.

2. In a stone-dressing machine, an upright connected to a vertically-sliding cross-bar and to a suitable weight, and a series of trip-levers carrying knives supported by said cross-bar, in combination with a releasing device operated by a carriage or frame thereof, and consisting of a sliding bar provided with an adjustable plate, and a pin adapted to enter a hole or socket in the upright when the sliding for the purpose set forth.

ICO

3. In a stone-dressing machine, the combination, with one or more trip-levers carrying suitable knives, of one or more drop-weights acting upon the rear end or ends of the levers, substantially as and for the purpose specified.

4. In a stone-dressing machine, the combination, with one or inore'trip-levers carrying the knives, of one or more drop-weights provided with hand-levers, and spring-catches for holding the weights in an elevated position, substantially as and for the purpose set forth.

5. In a stone dressing machine, one or more -trip-levers carrying adjustable weights and knives, one or more drop-weights provided with hand-levers, and suitable catches for holding the weights iu an elevated position, substantially as and for the purpose described..

6. In a stone-dressing machine, the combination, with a vertically-sliding cross-bar for supporting the front ends of the trp-1evers, of 2L lever connected to said bar and to a pivoted upright by a suitable spring, said lever having a cam acting against the upright to throw the Wheel of the upper oone-pu11ey out of fretional Contact With the cam-shaft, substantially as and for the purpose speeied.

In testimony that I claim the above I have hereunto subscribed my name in the presence Io of two witnesses.

THOMAS H. COOK.

Vtnesses:

J. J. VAN KLEECK, J H. GoRYDoN BROWN.

Images