US613353A

US613353A - Polish ing-machine

Info

Publication number: US613353A
Authority: US
Publication date: 1898-11-01
Anticipated expiration: 1915-11-01

Description

No. 6l3,353. Patented Nov. I898. F. BUBSEB.

POLISHING MACHINE.

(Application filed July '7, 1897.)

3 Sheets-Sheet 2.

(No Model.)

m: nuams PETERS co. PHOTO-Lima, wnsumemn, n. c

N0. 6l3,353. Patented Nov. I, I898. F. BUBSER.

POLISHING MACHINE.

(Application filed July 7. 1897.) (-No Model.)

3 Sheets-Sheet 3.

UNITED STATES PATENT OFFICE.

FIDEL BUBSER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE POPE MANUFACTURING COMPANY, OF SAME PLACE AND PORTLAND, MAINE.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 613,353, dated November 1, 1898.

Application filed July 7, 1897. Serial No. 648,687. (No model.)

To all whom it may concern:

Be it known that I, FIDEL BUBSER, a citizen of the United States, residingin the city and county of Hartford, in the State of Connecticut, have invented certain new and useful Improvements in Polishing-Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to machines for buffing or polishing articles of wood or metal; and its object is to produce an improved machine of this class which shall operate with great efficiency and economy and which shall be particularly adapted to the buffing or polishing of tubes or rods of metal or wood, such as are employed in the construction of bicycles.

The machine comprises in its construction a suitable buffer or polisher, with means for driving the same and means for holding the tube or other article to be polished in operative relation with the buffer or polisher. In its most approved form the holding means are so arranged that the tube or other article to be polished or buifed is fed automatically across the buffing or polishing surface, it being possible also to regulate the speed of movement of the tube or other article with relation to the speed of movement of the buffing or polishing surface, so as to produce any desired result.

In the accompanying drawingsl have illustrated my invention as embodied in such an improved form of machine, and I will proceed to describe my invention with reference thereto.

In the drawings, Figure 1 is a plan view of the machine referred to. Fig. 2 is an elevation of the same as seen from the left in Fig. 1, with the tube-supporting devices removed. Fig. 3 is a detail plan view, on alarger scale, illustrating particularly the manner of feeding the tube to be polished or buffed across the polishing or buffing surface. Fig 4 is a View, partly in longitudinal section and partly in elevation, of the parts shown in Fig. 3. Fig. 5 is a detail view illustrating a slightly different form of the belt-tightener. Fig. 6 is a detail View illustrating a device for permitting angular adjustment of the rod or tube carrier.

In the machine shown in the drawings the Various Working parts are supported upon a bed-plate or frame A. Pedestals'B and B are mounted upon the bed-plate or frame A, the pedestal B being preferably fixed in position thereon, while the pedestal B is mounted adjustably thereon toward and from the other pedestal B, a lug 1) (shown in dotted lines in Fig. 2) projecting downward into a slot at of the bed-plate or frame and being engaged by a threaded shaft 1), which is provided with a suitable hand-wheel 19 The lug b is extended below the bed-plate or frame and is screw-threaded, as at 19 to re ceive a clamping-lever b, by which the pedestal may be securely held in adj usted position.

In suitable bearings in each pedestal is ie ing or polishing strap or belt D, which may be of any suitable material adapted for its purpose.

The pedestal B is made adjustable, as already described, to accommodate straps of different lengths; but as it is desirable that So provision should be made for slackening or tightening the belt at dififerent times in the operation of the machine I have provided a belt-tightener, as shown clearly in Figs. 1 and 2. As there shown, the belt-tightener comprises a suitable pulley d, mounted between the arms of a forked carrier or lever d, which is pivoted upon a suitable bracket (:1 A spring (P, which may be attached to the free end of the lever d, serves to maintain the 0 belt D normally tight, or at least with its upper or operative member yieldingly in contact with the tube or other article to be polished, as shown clearly in Fig. 2. A notched sector d is secured in proximity to the free end of 5 the lever, and a latch 01 is mounted upon the lever and is adapted to engage the notch of the sector (1 to hold the pulley d out of contact with the belt D in opposition to the tension of the spring (1 A buffer or polisher such as that just described, in which the buftin g or polishing sur face is formed by. a belt or strap, will generally be found to be better adapted for the buffing or polishing of tubes or rods than a disk or wheel buffer or polisher; but it will be obvious that a buffer or polisher of this particular kind is not essential to the carrying out of the invention and may be replaced by any other well-known form of buffer or polisher.

Mounted upon the bed-plate or frame A is a second plate E, which forms a part of the devices for supporting and carrying the tube or other article to be bufi'ed or polished. The said plate E is arranged at more or less of an oblique angle with respect to the bed-plate or frame A. In Fig. 3 I have represented it bolted to the bed-plate or frame A by bolts which pass through flanges e c. It is preferable, however, to provide for angular adj ustment of the plate or carrier E, and in Fig. 6 I have shown the bed-plate or frame A as formed with semicircular slots a a, through which the bolts e 6' pass, so that by loosening the bolts the plate E may be set as desired.

Mounted in brackets ff on the plate E are supporting and guide tubes F F, there being preferably one such tube at each side of the buffer or polisher D. The brackets are split, as at f, and provided with clamping-boltsy, so that the position of each tube may be adjusted and the tube then fastened securely in its adjusted position. One of these tubes, F, receives the tube or rod to be polished at one side of the buffer or polisher and the other, F, delivers the polished tube or rod at the other side of the machine, the said tube or rod having passed across the face of the buffer or polisher D between the ends of the two tubes F and F. In the end of the tube F nearest the buffer or polisher is a removable bushing f which is held in place by a suitable clamping-ringf applied to the end of the tube F, and has a conical opening which centralizes the tube or rod to be polished. Suitable bushings are substituted one for another, according to the size of the tube or rod to be polished, it being desirable that the tube or rod shall be supported substantially central with respect to the receiving-tube F, but shall pass freely through the bushing. The main function of the tubes F and F is to guide the tube or rod to be polished, preventing it from lashing about to its injury, and incidentally to support its end; but inasmuch as it is desirable that the tube or rod to be polished shall be permitted to rotate freely while it is in contact with the buffing or polishing surface I prefer to provide between the tubes F and F and in close proximity to the buffer or polisher, one on each side thereof, freely-rotatable supports for the tube or rod while it is being polished. I therefore secure to the plate E, between the two inner brackets f f, two other brackets g g, which support freely-rotatable sleeves G, which in turn loosely s upport the tube T and are themselves rotated by contact with the tube or rod. Any suitable bearings whichwill permit the sleeves G to rotate freely may be employed. In Fig.

4 of the drawings I have shown the sleeve G as revolving on balls 9, which are supported by cones formed on a sleeve 9, the latter being fixed in the bracket g. The bearings are protected from dust by a dust-cap g or other suitable device. Bushings g may be placed in the sleeve G to directly support the tube, being removable to permit others to be substituted, according to the size of the tube.

In the use of the machine which I have described herein the belt 13 is first slackened or allowed to drop below the axis of the tubes F F by raising the free end of the forked lever (1, the latch d engaging the notched sector d to hold the tightening-pulley (I out of contact with the belt. The tube to be polished is then pushed through the receivingtube F and the supporting sleeve or bearing G until its end projects over the belt or strap D. The latch (77 is then released and the belttightening pulley dis caused by the spring (1" to press the belt or strap against the tube. Motion being imparted to the belt or strap D the tube is subjected to the buffin g or polishing action of the belt and is fed forward across the face of the belt, its leading end entering the second bearing and the tube F until its whole length has passed across the belt.

It will be understood that the speed of rotation of the tube T will depend upon its position with relation to the belt D. If it is disposed at right angles with respect thereto, it will have the maximum speed of rotation, while as its position approaches parallelism with the belt its speed of rotation will be proportionately reduced. The peripheral speed of the rotation of the tube will of course be less than the speed of the belt or strap in any case by reason of the friction of the tube in its bearing, and the abrasive or polishing action of the belt or strap on the tube will be proportional to the difference between the lineal speed of the belt or strap, or, in other words, the surface speed of the buffer or polisher, and the peripheral speed of the tube. If it were desired to increase the abrasive action beyond the maximum possible under these conditions, it would be necessary to rotate the tube in the opposite direction. It will also be understood that if the tube crosses the belt or strap at right angles there will be no tendency of the tube to move in the direction of its axis, and in such a case it would be necessary to feed the tube forward by hand or by suitable mechanical devices. If, however, the tube crosses the belt or strap at an oblique angle-as represented, for example, in Figs. 1 and 3 of the drawingsthe action of the belt or strap upon the tube will be not only to cause it to rotate, but to cause it to move in the direction of its length, thereby effecting the necessary feed automatically. A variation in the angle at which the tube crosses the belt or strap will obviously effect a corresponding change in the rate of feed.

The form of belt-tightener shown in Fig. 5 is preferable to that shown in Fig. 2 for the reason that it prevents the decrease in the tension of the spring,which takes place in the construction shown in Fig. 2 as soon as the roller 61 rises and likewise permits of the adjustment of the tightener while maintaining tension on the spring. In the construction shown in Fig. 5 the lever or carrier d is mounted, as before, upon a standard 01 and carries the pulley d. The spring (1 is also attached to the lever 01, but instead of having its lower end fixed to the frame or bedplate it is secured to an arm at. The latter is carried by a short shaft al to which the rock-lever d is secured. A latch 01 on the lever d engages a notched sector d This construction allows the operator to set the tension on the spring (1 at the proper amount to force the roller into contact with the belt and raise it to its operative position.

Since many changes may be made in the details of construction and arrangementherein shown and described without departing from the spirit of my invention, I do not de sire my invention to be limited to the precise construction and arrangement shown and described herein.

I claim as my invention- 1. The combination with a buffer or polisher and means to drive the same, of a rotatable support to loosely hold the tube or rod to be buffed or polished, said support being mounted to rotate freely with the tube or rod, substantially as shown and described.

2. The combination with a buffer or polisher and means to drive the same, of a freelyrotatable sleeve loosely supporting the tube or rod to be bufi'ed or polished and having its axis disposed at an oblique angle with relation to the direction of movement of the buffer or polisher, substantially as shown and described.

3. The combination with a buffer or polisher and means to drive the same, of a guiding-tube to receive the rod or tube to be buffed or polished and mounted in proximity to the buffer or polisher with its axis disposed at an angle with relation to the plane of movement of the buffer or polisher, and a supportingsleeve rotatably mounted between said tube and buffer or polisher and in line with said tube, substantially as shown and described.

at. The combination with a buffer or polisher and means to drive the same, of a bracket mounted in proximity to said buffer or polisher, a sleeve supported on ball-bearings in said bracket, with its axis disposed at an angle with relation to the plane of movement of the buffer or polisher, and bushings in said sleeve to receive and support the tube or rod to be buffed or polished, substantially as shown and described.

5. The combination with a buffer or polisher and means to drive the same, of a tube mounted in proximity to the buffer or polisher, a removable bushing having a conical opening in the end of said tube, and a clamp to secure said bushing in said tube, substantially as shown and described.

6. The combination with an endless-belt bufier or polisher, pulleys to support said belt, and means to drive the same, of a freelyrotatable support to loosely hold the article to be buffed or polished, a base or frame to maintain said support in proximity to said belt, said frame being adjustable axially to vary the degree of obliquity of the holder with relation to the direction of movement of the belt, and means to secure said frame and holder in adjusted position, substantially as shown and described.

7. The combination with an endless-belt buffer or polisher, pulleys to support said belt and means to drive the same, of a rotatable support to loosely hold the tube or rod to be buffed or polished mounted in proximity to said belt, said support being mounted to rotate freely with the tube or rod, substan-,

tially as shown and described.

8. The combination with an endless-belt buffer or polisher, pulleys to support said belt and means to drive the same, of a freelyrotatable sleeve loosely supporting the tube or rod to be buffed or polished and having its axis disposed at an oblique angle with relation to the direction of movement of said belt, substantially as shown and described.

9. The combination with an endless-belt buffer or polisher, pulleys to support said belt and means to drive the same, of a holder for the article to be buffed or polished mount= ed in proximity to said belt, a tightener-pulley for said belt, a lever in which said tightener-pulley is mounted, a spring holding said pulley normally against the belt, a latch mounted upon said lever, and a notched sector for engagement with said latch, substantially as shown and described.

10. The combination with an endless-belt bufier or polisher, pulleys to support said belt and means to drive the same, of a holder for the article to be buffed or polished mounted in proximity to said belt, a tightener-pulley for said belt, a yielding carrier for yieldingly holding said tightener-pulley against the belt and means for changing the position of said tightener-pulley while maintaining the tension on said yielding carrier, substantially as shown and described.

11. The combination with an endless-belt buifer or polisher, pulleys to support said belt and means to drive the same, of a holder for the article to be buffed or polished mounted in proximity to said belt, a tightener-pnlley for said belt, a carrier in which said tightener-pulley is mounted, a spring applied to said carrier, and means to shift the position of said spring to change the position of said carrier and pulley while maintaining the tension on the spring, substantially as shown and described.

This specification signed and witnessed this 2d day of July, A. D. 1897.

FIDEL BUBSER.

\Vitnesses:

CHAS. SHAFFER, HERMANN F. LUTZ.