US379949A - Lawn-mower - Google Patents

Description

( 3 sheets -sh'eet 1.

W. L. FRISBTE.

9 LAWNMOWER. No. 379,949. Patented Mai. 27, 1888.

l llllllllfllllllllllllllllIIIll| 9 N. PETERS, Pmlwmn mr, Washington. D: c

(No Model.) v 3 Sheets-Sheet- 3.

W. L. v 19191213.

LAWN MOWER.

No. 379,949. Paten tjed Mari. 2'7

N PETERS PMlD-Lifllugnphcr. Washington. D, C.

UNITED STATES WILLIAM L. FBISBIE, or SYRACUSE,

' PATENT ()FFICE'.

TO JAMES C. KENYON, OF SPRINGFIELD, MASSACHUSETTS.

LAWN-MOWIER.

SPECIFICATION forming part of Letters ,Patent No. 379,949, dated March. 27,1888.

Application filed July 14, 1887.

Serial No. 244.274. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM L. FRISBIE, a citizen of the United States, residing at Syracuse, county of Onondaga, and State 'of New York, have invented a new and useful Lawn- Mower, of which the following is a specificati'on.

to mechanism for adjusting the position of the stationary cutter relative to the rotary cutter; the second part to an adj ustable journal-bearing for the cutter-shaft; the third to a handleholding device; the fourth to a traction-roller, and the fifth to a truck-wheel journal and journa1-bearing; and the invention'consists in the combination and construction as hereinafter described, and more particularly pointed out in the claims.

My invent-ion is fully illustrated in the accompanying drawings, in which Figure I is an elevation of the outside of part of the wall or side of the machine seating one end of the stationary cutter. Fig. II shows the same seen in reverse. Fig. III is an outside view of the stationary cutter-moving device. Fig. IV showsthesalne in reverse. Fig. V is an edge view of the same part. Fig. VI is an end view of the stationary cutter. Fig. VII is a front elevation of the ahove-enumerated parts assembled and in partial section on the dotted line 00 0c of Fig. I. Fig. VIII is an elevation of one end of the rotary cutter with aportion of the side wall of the machine shown in section. Fig. IX is an end view of theadjustable journal-bearing sleeve for the cuttershaft. the handle-holder belonging to one side of the machine, and showing one fork of the handle, while Fig. XI is the same view of the holder with stud-bolt G in section, showing the fork of the handle in another position. Fig. XII

' is an edge view of part of one fork of the hanbearing of one truckwheel.

dle. Fig. XIII is a plan view of part of a traction-roller. Fig. XIV is a side elevation of one wheel thereof. Fig. XV is a view of details composing the journal and journal- Fig. XVI is a vertical section through the journal .and journal-bearing of a truck-wheel. Fig. XVII. is aside elevation of the lawn-mower with the (lap or guard plate" removed. Fig. XVIII is The first part of my improvements relates,

Fig. X is an elevation or side view of a detached view of the cap or guard plate. Fig. XIX is a longitudinal vertical section with parts in elevation. Fig. XX is a detail section of a portion of one of the side walls. Fig. XXI is a side elevation of the journalbearing sleeve.

A is a side wall of alawn-mower, including the cap or guard plate, and, as shown in Fig. I, is provided with an opening, a, therethrough in the form of a vertical slot, within yet admits of a limited vertical movement of the cutter, as is clearly shown.

c is a screw-pin projecting outward from the wall perforated by opening a,and near the edge of said opening, and D is a disk perfo- ;NEW YORK, ASSIGNOR OF ONE-HALF rated axially to receive the bolt 12 as a jour nal, and provided upon its inner face with a spiral groove engaging with the screw-pin c.

The bolt 11 is provided with a head,as shown,

to bear upon the backpf the disk,-and the disk I is adapted to be rotated by any convenient form ofspanner or wrench.

When assembled, as seen in Fig. VII, and it is desired to adjust the stationary cutter B to the rotary cutter, the bolt b is turned a short distance to release disk D,which is then rotated to move, by means of its spiral groove and the screw-pin c, the stationary cutter to the required point, to which it is held by sim ply again tightening the bolt 1). I

In Fig. VIII an adjustable journal-bearing for the rotary cutter-shaft O is shown. This bearing is formed of a sleeve, E, on said shaft, which is received in a socket or recess in wall A,within which socket the sleeve rests. The shaft 0 has its bearings in wall A. A' camsurface, 6, is formed on the bottom of the socket. or recess, which corresponds with a similar cam-surface, 6, upon one end of sleeve 1 over the machine.

E. f is a binding-screw for securing sleeve E in place. f is an angular head, by means of which the sleeve is adjusted.

The sleeve Eis shown in dotted lines provided with a conical mouth bearing against a corresponding shoulder upon shaft 0, though vertical shoulders upon both surfaces would answer the same purpose.

As the journal surfaces of sleeve E and shaft G become worn, the set-screw f is looscued, and the sleeve 1*) rotated by its head to take up the wear, and being in the required position, is secured there by the screw f.

The handle-holder, in combination with one fork of a handle, is as follows: Abolt,G,uniting the disks H on and integral with opposite side walls, A, of the machine, has an outwardly-projecting head, g, forming a flange upon said bolt, the inner face of which is the thickness of one fork, K, removed from the face of the disk.

The projecting part of bolt G forms a fulcrum at times for the fork K to be rotated upon. Upon one side of the bolt, and raised from the face of the disk, is a block, h, one side of which forms a bearing for the end of fork K when in the position shown in full lines in Fig. X-itsoperativeposition-while theother side of said block forms a bearing for the fork when in the position shown in dotted lines in the same figure, and when the handle is swung Upout-he opposite side of bolt G from block h is a block, 0', forming,with block h, a support for the fork K in either position shown in Fig. X.

Connecting the two blocksh z is a segmental rim,m, having the axis of the bolt G for its center and removed from the longer bearing side of block i, to leave a shoulder or second bearing side thereto.

The fork K has upon its end a hook, at, which catches against this shoulder of block i when the fork IS in the position indicated by dotted lines, Fig. X, while the rim m, by contact with the end of hook n, holds the fork beneath the bolt G in revolving and at other times, and so causes the bolt-head to be suflicient to retain the fork K to the disk H.

The end of fork K is of the configuration shown, with curved inner and outer edges having the axis of bolt G as their center when in the operative position shown in Fig. X. When the machine is being operated, the forks of the handle bind upon the bolt G as an axis and fulcrum. To place the fork in the position indicated in dotted lines in the same figure, it is simply oscillated, and may be restored to an operative position again by simply pulling over the handle, permitting the weight of the fork to bear against the bolt; but when the fork isin the position shown in dotted lines, Fig. X, and it is desired to remove the handle, the entire weight is allowed to rest upon the blocki and rim adjacent thereto, and the fork K is rolled upon the block i as a fulcrum to entirely clear it from the bolt G with its head, and so leave it free to be entirely removed.

This is shown in Fig. XI, and in replacing the handle it is only necessary to let the hook n follow down the longer side of block i until it passes over the shoulder thereof, when the handle can be swunginto either position shown in Fig. X.

In this device the head of the bolt, required at this point to assist in framing the sides of the machine, is the only thing needed to retain the fork of the handle to the other parts of the disk, and the handle, with its forks, may

be removed or replaced instantly without care.

My traction roller consists of a series of wheels, I, having a number of corrugations,0, in their peripheral rims p, and having hubs provided with clutches formed of teeth 1 and interdental spaces 8 proportioned in number to the corrugations upon the wheel-rims, so that one wheel may be clutched with the next wheel, to either hold the two, as shown in the first two wheels, Fig. XIII, with the ends of the corrugations opposite and in contact, or, as seen in the second and third wheels, with the sides of the corrugations in close contact.

The wheels I are journaled upon the usual axle, J, and through the last wheel,(not shown,) are clutched to the driving-gear of the ma chine.

The clutches upon the hubs are made long enough to engage in either relative position of adjacent wheels, and the machines are supplied with a number of wheels I suflicient to build the roller up as a solid drum, by the removal of more or less of which and the adjustment of the remainder the weight and traction or holding-surface of the roller may be varied at will.

In the case of newly-seeded ground, where the resistance to the knives is slight and less traction is needed,and where a weighted roller would be of advantage to the grass itself, the roller may be used solid; but where the sod is heavy a roller built up of alternate wheels I, arranged as the first two wheels in Fig. XIII, works to advantage by the great hold the roller takes upon the sod, which penetrates the interstices between the individual wheels.

Thejournal and bearing-of my truck-wheel are constructed as follows: Upon the truckarm L is a stud, 61, having an angular boltopening, a, therethrough. Upon the stud d, with its base against the truck-arm, is placed awasher, O, of the configuration of a truncated cone. Spurs 0 from the base of washer 0, received in opposite depressions, Z, in the face of truck-arm L, prevent any rotation of washer O on the stud as its axis. The truckwheel W, axially counter-bored to half of the depth of its hub to correspond to the conesurface of washer O, is placed over and rests upon said washer The wheel W is similarly counterbored in its hub to the center from and have its inner end comenearly in contact.

withthat of washer Q. vA bolt, t, having a square shoulder to fit the opening a',and a retaining-head coming against the outer side of truck-arm L, is passed through the stud d,and

a nut, 25, and washer 25, upon its projecting 5 threaded end, are brought against washer R, to clamp the Wheel and its two-part bearing to the truck-arm. As shown in Fig. XVI, the inner ends of the washers O R are not in contact, being held apart by the cone-faces of the wheel-bearing, the space thusleft permitting the approach of the washers in the wheel and on the stud,in taking up, by means of the screw nut upon bolt t, the wear of the journal-surfaces, and the conical washers. while not in contact, are held from rotating by spurs w from one entering recesses y upon the near face of the other. The stud d does not extend through the combined washers, so that a space between its end and the inner face of the washer permits the washer R, nut, and washer t to move longitudinally upon the bolt t. By these means a tightjoint is formed at the journal to exclude all dust and moisture, and all wear of the journalsurfaces may be compensated for by the tightening of the joint.

Now having described my invention,what I claim is.-

1. In lawn-mowers, a stationary cutter, B, having an end guided to move in one direction in the side Wall, A, wall A having opening a therethrough elongated in the direction of movement of cutter B, screw-pin c, projecting from wall A near the outer edge of opening a, spirally-grooved disk D, engaging with screwpin a, and adapted to be rotated by a wrench, and bolt b, arranged to pass as an axis through spirally-grooved disk D, and through opening a, to screw into cutter B, and provided with a head adapted to come against and hold the 40 spiral-groove disk to the screw-pin and bind it in the position in which it may be set, as and for the purpose set forth. 2. A lawn-mower cutter-shaft, 0, having an end shoulder thereto, a sleeve, E, upon said shaft socketed within the side wall, A, and having ashoulder corresponding to that of the shaft and bearing against it, said sleeve provided with an angular head, adapting it to be rotated by a wrench, two pairs of corresponding camsurfaces, e 0, upon the sleeve E and fixed wallA, respectively, adapted to cause the sleeve E an endwise movement upon being rotated, and a binding-screw, f, from the wall A, bearing upon sleeve E, to hold the same thereto, all combined and operating as and for the purpose set forth;

3. In lawn-mowers, a disk, H, prolonged from a side wall, A, a stud-bolt, G, projecting outward therefrom centrally, and having a 60 head, g, a block, h, raised from the disk-face upon one sideot' stud-bolt G, a block, 5, upon said disk-face upon the opposite side of studboltG from the one h, having aspace between it and the stud-bolt, a segmental rim, m, connecting blocks t and h, having the axis of studbolt G for its center, and leaving a radial shoulder to block 2', and a fork, K, adapted to rest flat upon the disk-face, of width enabling it to pass under stud-bolt head g, provided with a hook end, n, adapted to bear upon the shoulder of block c and rest upon rim m, having an inner curved edge conforming to studbolt G, and an outer curved edgestarting from hook n, and a shank whose parallel edges'are tangential to its curved edges, and an end edge extending from the hook end it radially to the bolt, and presenting a surface coinciding with one side of the block- 72 when the shank is resting upon block i, and having its shank coinciding with block h when its hook end is 8 resting against the shoulder of block 73, and adapted from said configuration to be rocked upon block 'i, to have its end released from block 71, and from bolt G and its head 9, substantially as shown and described. 8

4. A traction-Wheel for lawn-mowers, consisting of the combination, with an axle, J, of a series of wheels, I, uniformly corrugated upon each lateral edge of their peripheral rims, and each provided with a journal-bearing in 0 the form of a hub, having clutch-teeth upon each end, and adapting said wheel to be clutched with an adjacent one on axle J, to cause the corrugations of both to interlock, or have their projecting curves or salient angles 9 5 in contact, as and for the purpose set forth.

5. The withindescribed tru'ckwheel and wheel-bearing for lawn-mowers, consisting of a' stud, d, upon truck-arm L, a wheel-hub having a journal-bearing conically counter- :00

'boredfrom its ends to the center of the hub,

two cone-washers having theirfaces coinciding with the journal-bearing surfaces of the hub, and arranged upon the stud, their ends truncated and held to each other and to the armL r05 from rotation, spurs upon the washers, and a screw-bolt, t, passing from arm L through the stud, and held therein from rotation, and provided witha nut and washer upon its projecting end removed from contact with theIIo end of the stud and bearing upon one conical washer, all arranged substantially as shown, and operating to take up all wear of the journal-surfaces upon the tightening of the nut upon its bolt.

WILLIAM L. FRISBI-E.

Witnesses:

MARK POTTER, LOREN J. MERRIFIELD.

Images