US767699A - Wheel for polishing woodwork. - Google Patents

Description

No. 767,699. PATIlNTED AUG. 16, 1904. G. H. KIMBERLY.

WHEEL FOR POLISHING WOUDWORK.

APPLICATION FILED FEB. 18, 1904.

, N0 MODEL. 2 SHEBTSSHEET l.

$755555 .272 men 227/" Q/XW a: W- M No. 767,699. PATENTED AUG. 16, 1904.

c. H. KIMBERLY.

WHEEL FOR POLISHING WOODWORK.

APPLICATION FILED FEB.1B, 1904. 7 N0 MODEL. ZSHEETS-SHEHT 2 5775/2 Zbr Y ft UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

CHARLES H. KIMBERLY, OF BRISTOL, CONNECTICUT, ASSIGNOR TO SES- SIONS CLOCK COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATION.

'WHEEL FOR POLISHING WOODWORK.

SPECIFICATION forming part of I Letters Patent No. 767,699, dated A gu 16, 1904. Application filed February 18, 1904. Serial No- 194,205. (No model.) i

To all whom it may concern:

My invention relates to improvements inwheels for polishing woodwork having a varnished or japanned surface; and the objects of my improvement are simplicity and economy in construction and convenience and efliciency in use.

In the accompanying drawings, Figure 1 is aside elevation of my wheel, together with a portion of the fabric for covering the periphcry of the said Wheel. Fig. 2 is an enlarged plan or edge View of the clamp for grasping the ends of the fabric covering. Fig. 3 is an end view of the same on a still larger scale. Fig. 4 is a sectional view, partly in elevation, of the same on the line w a of Fig. 3. Fig. 5 is a broken-out elevation of the wheel on the same scale as Fig. 1 and with one of the clamping-plates removed, so as to show the inner face of the remaining plate. Figs.'6 and 7 are respectively end and side views of the rim portion of the wheel in a modified form, together with a filling-block.

I employ a cast wheel with a divided rim and hub withconnecting-spokes 6, the two parts of the rim being designated by the letters A A and the two parts of the hub by the reference-numerals 7 7, the same being as to its general form and construction an ordinary two-part wheel or pulley. The periphery of the wheel is made of a special form to adapt it for a covering of fabric or its equivalent. Acentral portion 8 is provided witha slightlyrounded face, while on each side of the said central portion there is a flat face 9 of a smaller diameter. The covering or fabric 10, a portion of which is shown in Fig. 1, covers this central portion 8. Two confronting ends of the half-rims A A are made short or planed off a little, as at the upper side of the wheel in Fig. 1, to permit the two ends 11 of the fabric or covering 10 to extend inwardly between the ends of the two half-rims. These two ends are clasped by a suitable clamp and are drawn inwardly by suitable pulling devices to stretch the covering tautly over the periphery of the central portion and to make the covering conform to and snugly fit the rounded face of the said central portion. The wheel is charged with any of the usual wet and abrasive materials and used in the ordinary manner of other wheels havinga covering for polishing wood with a varnished or japanned surface.

The clamp is formed of a pair of two-part iplates, the two parts 12 12 of each plate being hinged together separately from the other iplates by means of the hinge-lugs 13 and pintle 1 L, something after the manner of a ruleijoint. The inner faces of each plate near one edge is provided with a ledge 15, which may lbe called a fulcrum-ledge, as the saidledges irest against each other, as shown in Fig. 3. N ear the opposite edges of the plates the se- {ries of holding prongs or teeth are arranged, those on'one plate being so distributed relatively to the teeth on the opposite plate as to break joints, or, in other words, have the prongs on one plate stand between the prongs of the companion plate, as best shown in Fig. 2. The two plates are forced toward "each other by any suitable pressure devices, which, as shown, consist of the bolts 17, passing through holes in the plates, and thumbnuts 18. These bolts will serve in a measure to make the two plates register with each other; but I prefer to employ additional devices therefor, which, as shown, consist of the dowel-pins 19, one end of which pins may be made fast in one plate, while its other end rests in a hole or socket in the companion plate. The covering or fabric 10 in the form of a long strip is passed around the wheel over the central portion 8 and its two ends 11 drawn inwardly down between the ordinary bolts 20, Fig. 1, which are inserted in the bolt holes 21, Fig. 5, to hold 'the two half-rims together. If these bolts are screwed up tight, they may be loosened alittle to facilitate drawing in the ends of the covering. These ends can be inserted in the clamp and the pressure device screwed up to firmly grasp and hold the ends of the covering. In order that the covering thus passed around the rim of the wheel and clamped at its ends may then be stretched thereon, I provide two pairs of screw-rods 22 and turnbuckles 23, the same being mainly of an ordinary construction of turnbuckle, with right and left hand screw-rods; The back edge of one plate is notched to admit the eye 24 of the screwrods and also drilled longitudinally from the ends through thesaid notch in order that the pins 25 may be passed through the eyes of the screw-rods as they lie in the notch, and thereby fasten the upper one of the screwrods of each turnbuckle to the said plate, as best shown in Figs. 4 and 5, the said eyes being so loosely fitted to the said pins as to permit of the plates standing at a slightly-inclined angle to the said rods, as shown in Fig. 5. The other screw-rods, as shown, are provided with like eyes 24:, which are received in recesses 26 in the hub and held therein by pins 27.

Having described a convenient way of connecting the screw-rods and turnbuckles to the clamp and hub of the wheel, it will be seen that by turning the turnbuckles in the direction to draw the ends of the covering inwardly the said covering will be firmly stretched and held on the wheel. The bolts that hold the two parts of the rim together where the covering passes inwardly having been loosened to facilitate drawing in the covering should now be tightened again to make a close seam and incidentally to more firmly secure the covering.

While a clamp with no joint in the middle would be just as good for a flat-faced wheel and might be used with a rounded face,it is preferable to hinge the clamp as described when the face of the wheel is rounded, as it is evident that a flat strip of covering would be first drawn taut on the highest point of the wheel. By means of the jointed or hinged clamp the middle portion may stop as the covering is drawn sufficiently taut, while the outer ends of the clamp may move on and stretch the covering on each side of the middle, and thereby make the fabric or flexible covering hug the wheel substantially the same throughout its entire width. In doing so the A two parts of each hinged plate of the clamp will stand at a slight angle to each other, as indicated in Fig. 5.

Although the wheel will have the covering on it when used, the said covering will have to be renewed from time to time, so that it is not considered as a permanent part of the wheel. Again, parties buying the wheel would generally furnish their own covering. In Fig. 1 I have shown a sufficient portion of the covering to illustrate its application to the wheel, but have made no attempt to show the said covering in the other views further than to indicate by the broken lines 28 in Fig. 5 approximately the position, that the two edges of the covering would have.

I prefer to slightly modify the construction of the rim on one side where the cloth or covering turns inwardly and to employ a removable filling-block fitted to the end of the rim on one side or half of the wheel, as illustrated in Figs. 6 and 7. The modification of the rim consists in merely making it a little shorter, so as to leave a greater space between it and the confronting end of the rim and in forming a dovetailed groove 29 in the face of the said rim, the said groove extending from side to side of the wheel. A filling-block 30 of the same contour as the rim in end view is provided on one side with a longitudinal rib 31 of a dovetailed form to fit the said dovetailed groove. The thickness of this filling-block corresponds to the shortening of the rim, so that when applied to the said shortened end of the rim the desired space for the covering to enter will be provided for be tween the face of this filling-block and the confronting face of the end of the rim in the companion part of the wheel. In Fig. 6 I have shown a broken-off portion of the said filling-block, so as to show a portion of the grooved face of the rim in the same view. By removing this block a much wider space is made through which to pass the ends of the covering to the clamping and stretching devices, whereby the said ends are more conveniently inserted. After insertion and before the covering is stretched the filling-block 30 is applied to the end of the rim by inserting its dovetailed rib 31 into the dovetailed groove in the rim and crowding the block longitudinally into place. The covering may then be stretched and the seam closed by the bolts 20 in the manner before described. After the covering is stretched the fillingblock will stay in place until the covering is removed or loosened, when the said fillingblock may be removed for re-covering the wheel.

It is apparent that some changes from the specific construction herein disclosed may be made, and therefore I do not wish to be understood as limiting myself to the precise form of construction shown and described, but desire the liberty to make such changes in working my invention as may fairly come within the spirit and scope of the same.

I claim as my invention- 1. A two-part wheel wit-h a divided rim and hub, and bolts or screws at the meeting ends of the two parts of the rim, the said wheel having a space left at one side between two of the said confronting ends to receive the ends of a flexible covering, and the said bolts or screws being adapted to draw the meeting ends of the two parts of the said rim together for pinching the said flexible covering within the said space.

2. A two-part wheel with a divided rim and a hub, the said wheel having a space left at one side between the two adjacent ends of the said divided rim for the passage of the ends of a flexible covering, in combination with clamping devices disconnected from the said rim for grasping the said ends of the covering, pulling devices connected with the said clamping devices for stretching the covering, and bolts or screws mounted on the said rim and arranged for drawing the said adjacent ends of the said divided rim together for further securing the ends of the said flexible covering after being stretched.

3. A wheel having a rim, spokes, and hub, with a space through the rim at one side of the wheel for the passage of the ends of a flexible covering, in combination Witha pair of two-part clamping-plates and pulling devices for the respective parts of the said plates, whereby the said clamping '7 plates inay be deflected -from a straight longitudinal 4. A wheel having a rim, spokes and hub, with a space through the rim atone side for the passage of the ends of a flexible covering,

in combination with a pair of two-partclamping-plates, the two parts of each plate having a hinge joint between them, two pairs of screw-rods and two turnbuckles connecting the rods of each pair, one pair of screw-rods and one turnbuckle being connected with the part on oneside of the said joint, and the other pair of screw-rods and turnbuckle being con nected with the part on the other side of the said joint.

5. A wheel having a rim, spokes and hub, with a space between the meeting ends of the rim for the passage of the ends of a flexible covering, one of the confronting ends of the rim at the said space, having in its face a groove extending from side to side of the rim, a filling-block for said space having a rib fitted to slide longitudinally into said groove, in combination with clamping de-. vices for grasping the said ends, and pulling devices connected to the said clamping devices for stretching the said covermg.

CHARLES H. Witnesses:

JOHN T. OHIDsEY, WALTER J. LOZELL.

KIMBERLY.

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