US19461A - Shoe-peg machine - Google Patents

Description

iras are SHOE-PEG MACHINE.

Specification of Letters Patent No.

To all whom 'it may concern:

Be it known that I, ABIJAH VOODWARD, of Keene, in the county of Cheshire and State of New l-lampshire,'have invented a new and Improved Machine for Splitting Boot and Shoe Pegs; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to theannexed drawings, making a part of this specification, in which- Figure l is a vertical section of my improvement taken in the line (50) Fig` 3. Fig. 2 is also a vertical section of ditto taken in the line (y) (y) Fig. 3. Fig. 3 is a plan or top view of dit-to.

Similar letters of reference indicate corresponding parts in the several figures.

The nature of my invention consists in giving a uniform and arbitrary intermittent .ry motion to the fluted feed roller7 whatever may be its adjustment, by means of two hevel wheels, a peculiar screw cam, a worm wheel and two pinions; arranged as follows, one of the bevel wheels being en the upper end of a vertical shaft, and 'the other, which must always gear with the `first, being on the end of the iiuted roller, and both being adjustable so as to suit different thicknesses of peg blocks without getting out of gear with one another and with the driving shaft, and the cam being so constructed, and its screw thread arranged in such relation to the eccentric pin which moves the splitting knife, that the feed or movement of the block will always cease or be completed before the knife commences to descend, and aga-in commence just as th knife has completed its ascent; as will be found. clearly set forth in the body of the specification.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A represents a rectangular frame on the upper part of which a platform B is placed,- and C is a lever one end of which is pivoted in the upper end of a vertical bar D which passes through the platform B and has a screw at its lower end on which screw nuts (a) are fitted so that said bar B may be adjusted higher or lower as may be required. To the opposite end of the lever C, the upper end of a rod E is attached. The lower end of rod E is attached to a crank pulley F which is placed on the inner end of the driving power shaft G at one end of the frame A.

On the lever C the knife E is formed, the

19,461, dated February 23, 1858.

cutting edge of which extends from (b) to (o) as shown clearly in Fig. l. On the drivshaft a cam I is placed. This cam is made by having a flange or thread project circumferentially from a hub (d) on the shaft, said thread being at right angles with the axis of the hub (d) from one of its ends (e) to the point and the portion from the point to the opposite end of the thread has an oblique position relatively withthe portion from the end (e) to the point This will be clearly understood by referring to Fig. 3. The thread it will be seen makes rather more than one revolution or turn on the hub (d) and the oblique part from the end (g) to the point (f), is strictly speaking the cam. The thread of the cam gears into a horizontal pinion (L) which is placed on the lower end of a shaft J which hrs its bearings in the frame A.

The upper end of the shaft J has a pinion (i) placed on it, and this pinion gears into a pinion placed on the lower end of a vertical shaft K which passes through the platform B, and has a bevel piniony (k) on its upper end. The pinion (2') on the upper end of the shaft d', is of considerable depth or thickness compared with its fellow on the lower end of shaft K. This is for the purpose of allowing the shaft K a certain degree of vertical play or adjustmentv without causing the pinions to be thrown out of gear.

The pinion (k) on the upper end of the shaft K gearsinto a corresponding pinion (Z) at one end of a fluted or corrugated roller L. This roller is parallel with the knife H on the lever C, and its bearings are in the upper 'ends of vertical bars M, M, which pass through the platform B and restor bear upon screws N which pass vertically through transverse beams O, O, in the frame A. The lower ends of the bars M, M, are connected by a rod l), which has a weight Q upon it. A lever R is also placed in' the frame A one end of said lever being pivoted in the frame or connected to it by a link or staple as shown at Fig. 2 the opposite or inner end of the lever bearing or resting on the pinion (j The lever it has a weight S upon it, and this weight keeps the pinion (lo) in gear with the pinion (Z) or permits the shaft K, from rising casually.

The block or bolt from which the pegs are cut., shown in red and designated by T, has one surface creased or grooved as usual `at right angles so as to form points to the pegs. The bolt is placed underneath the fluted roller L, and each time the knife H is moved upward the curved or oblique portion of the thread forming the cam I will actuate or rotate the pinion (71.) a certain distance and motion will be communicated to the shaft K, by means of pinions (i) (j), and roller L will be rotated in consequence of the bevel wheels (7c) (l). As the knife H descends the roller is stationary because. the portion of the thread on the cam included between the end (e) and point works in the pinion (7L) during the descent of the knife, and as this portion of the thread is at right angles with the axis of the hub (CZ) the pinion (h) will not be rotated as the knife descends. By this means the stick will be fed evenly or regularly to the knife and the block cannot be moved casually by the imperfect working of the parts, because the intermittent movements of the lever C are both given from the shaft Gr by positive mechanical devices having an arbitrary movement. j

It will be seen' that by adjusting the screws N, N, the iuted roller L may be raised or lowered to suit the height of the bolt T. The weight Q causes the roller L to bear upon the block with sufficient pressure and the weight S on the lever R keeps the bevel pinions (7c) in gear with pinion (l).

The bolt T is fed forward or underneath the knife K at each upward movement of the knife a distance equal to the width of the spaces between the centers of the grooves in the block and each time the knife descends a strip or slab is split from the bolt of corresponding width, the strips or slabs being held together by an elastic band, and when the bolt is all split intoV slabs in this direction, it is turned and fed underneath the knife so as to be split in a similar manner but the latter cuts being at right angles to the former ones. By the latter cuts it will be seen that the slabs cut' from the bolt at the first operation are recut into pegs.

It may be well known that it is very essential to have an exact or arbitrary feed movement given to the bolt because the bolt is grooved at right angles in order to form the points of the pegs, and it is therefore necessary that the knife should descend upon the block each time at the center of the crease or groove, in order that the pegs. shall be split or rived from the bolt with perfect points, for if the knife should descend upon the bolt at the center of a space between the grooves, the points at least of two rows of pegs, and quite probably of a whole bolt, would be destroyed and the pegs rendered movement.

I am aware that machines have been devised for cutting boot and shoe pegs, a patent having been granted to S. K. Baldwin July 16, 1842 in which a fluted roller is used for feeding the block underneath the knife, but in this machine the roller is operated direct from the knife or from its lever by means of a pawl attached thereto, which pawl catches into a ratchet on the feed roller. This arrangement is not good because the bolt is not moved arbitrarily and therefore a liability of the bolt getting deranged or incidentally moved and the work spoiled, exists. Another objection to this machine is that the fluted roller cannot be lowered or raised to suit bolts of varying thicknesses, without changing the relative position of the pawl and ratchet and consequently the feed movement of the roller will be more or less affected thereby.

I do not claim a fluted feed roller and splitting knife combined, irrespective of the manner in which the combining is effected, nor do I claim the arrangement of the roller in an adjustable frame which cannot be adjusted without injuriously effecting the feed movement of the roller, but

What I do claim as my invention and desire to secure by Letters Patent, is

Giving a uniform and arbitrary intermittent rotary motion to the fluted feed roller, whatever may be its adjustment, by means of two bevel wheels 7c, Z, peculiar screw cam I, worm wheel h, and pinions z', j, arranged as follows, one of the bevel wheels being on the upper end of a vertical shaft, and the other, which must always gear with the first, being on the end of the fluted roller, and both being adjustable so as to suit different thicknesses of peg blocks without getting out of gear with one another, and with the driving shaft, the cam being so constructed, and its screw thread arranged in such relation to the eccentric pin which moves the splitting knife, that the feed or movement of the block will always cease or be completed before the knife commences to descend, and again commence just as the knife has completed its ascent; all substantially as and for the purposes set forth.

v ABIJAH VVOODWARD.

Witnesses:

G. F. STARKWEATHER, S. W. BRADFORD.

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