US972276A - Power apparatus. - Google Patents

Description

J. F.. SPERRY. POWER APPARATUS. APPLIGATION FILED JAN. 11, 1909.

972,276. Patented Oct. 11,1910.

' 3 SHEETS-SHEET 1.

A "ll" WITNESSES THE NORRIS PETERS :01, wAsHmcrcm-n. c1

J. F; SPERRY.

POWER APPARATUS.

APPLICATION FILED JAN.11, 1909.

972,276. Patented Oct. 11,1910.

3 8HEETSSHEET 3.

\ xerigiblm/ WITNESSES.-

% Q I g azvgzvm/e.

1n: NaRRls PETER5 co., WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

JOHN F. SPERRY, OF KAW, OKLAHOMA.

POWER APPARATUS.

To all whom it may concern:

Be it known that I, JOHN F. SPERRY, a citizen of the United States, residing at Kaw city, in the county of Kay and State of Oklahoma, have invented a certain new and useful Improvement in Power Apparatus, of which the following is a specification.

My invention relates to improvements in power apparatus.

It is adapted for farm use for such purposes as running corn shellers, grinding machines and for lifting and lowering loads as in hay hoisting devices.

My invention is designed as an improvement upon the power apparatus shown and described in an application for patent filed April 21, 1908 by myself and John H. Eby, having Serial Number 428,472, and allowed July 11, 1908.

In the aforesaid application there is shown and described a machine having a drum rotatively mounted upon a rotary power operated shaft adapted to be locked to the drum so that the drum may be rotated thereby to effect the raising of a load. Controlling means is provided by which when the shaft is rotated in one direction the drum will be locked to the shaft, and when the shaft is rotated in the opposite direction, the drum will be released from the shaft and permitted to freely rotate. With such a construction a load will be suddenly dropped when the shaft is rotated in a direction to release the drum.

The object of this present invention is to provide a construction by which a load after being lifted may be gradually lowered without releasing the drum from the shaft, and by which when there is no load upon the drum it may readily be released from the shaft so as to be rotated freely by the drawing therefrom of a rope wound thereon and designed to support a load. In the former invent-ion, above referred to, the load exerted no control over the release of the drum from the shaft, as the reverse movement of the shaft effected release of the drum irrespective of the presence or absence of a load upon the drum.

Other novel features are hereinafter fully described and claimed.

While other means than those shown and described may be employed to carry into effect my invention, I have in the accompanying drawings illustrated the preferred form of my invention.

Specification of Letters Patent.

Application filed January 11, 1909.

Patented Oct. 11, 1910.

Serial No. 471,766.

Figure l is a plan view, partly broken away. Fig. 2 is a vertical sectional view on the dotted line a,-b of Fig. 1. Fig. 3 is a vertical section on the dotted line ccZ of Fig. 4. Fig. 4 is a horizontal sectional view on the dotted line e; of Fig. 3, the drum being shown released from the shaft. Fig. 5 is a section on the dotted line ab of Fig. 1 looking in a direction opposite to the view .shown in Fig. 2. Fig. 6 is a vertical sectional view of the brake mechanism taken on the dotted line gh of Fig. 4. Fig. 7 is a fragmentary horizontal sectional view on the dotted line e; of Fig. 3, the drum being shown locked to the driving shaft.

Similar characters of reference denote similar parts.

1 denotes two vertical side members of the framework and 2 a horizontal platform secured thereupon. Rotatively mounted in the side members 1 is a horizontal rotary driving shaft 3, to one end of which is secured a coupling 4, of any desired type, by which the shaft 3 may be connected to a corn sheller, or other machine not shown. Rotative on the shaft 8 is a drum 5 having heads 6 and 7. Secured to the shaft within the drum 5 is a clutch member 8, shown in Fig. 3, having a circular row of ratchet teeth 9 for engaging teeth 10, disposed concentrically on the head 6. The outer end of the head 7 has a circular row of ratchet teeth 10 adapted to engage teeth 9 on the spur gear wheel 11, secured on the shaft 3 and meshing with a spur gear wheel 12 secured upon a horizontal shaft 18 rotatively mounted in the adjacent side member 1 and a bearing 1 secured to the underside of the platform 2. A spur gear wheel 12 is secured to a horizontal shaft 13, which is rotatively mounted in the opposite side member 1 and a bearing 2 secured to the underside of the platform 2. The spur gear wheel 12 meshes with an intermediate spur gear wheel 9 rotatively mounted on a horizontal stud 10, secured to the adjacent side member 1. The spur gear wheel 9 meshes with a spur gear wheel 11, rigidly secured upon the shaft 3. Rigidly secured to the gear wheels 12 and 12 respectively, are two bevel gear wheels 14 which mesh with a horizontal bevel gear wheel 14 which is rotatively mounted on a vertical, rotary shaft 15, mounted in the platform 2 and in a horizontal bar 16 having its ends secured to the side members 1. A right angled power lever 17 is rigidly secured at its angle, above the gear wheel 14, to the upper end of the shaft 15 and has its longer arm extending horizontally through an inverted U-shaped yoke 18, secured to the upper side of the gearwheel 14 and in which the lever 17 is oscillative relative to the rotary member or bevel. gear wheel 14.

Upwardly extending from the upper side of the gear wheel '14 is a projection 19 which serves as an 'abutment against which the lever 17 bears when the lever 17 is revolved in the direction indicated by the arrow in Fig. 1. To the out-er endof the shorter arm of the lever 17 issecureda bolt 20 having an eye 21 to which is-secured one end of a coil spring22 the other end of which is secured to a bracket 23, secured to the upper side of the gear wheel 14. The tension of the spring22 is such as to normally retract the power lever 17 to the position shown in Fig. 1, in which position said'lever is out of contact with the-abutment 19. To the outer end of the power lever17 may be secured a doubletreev 24, as shown in Fig. 1. A brace rod 23 preferably connects the outer ends of the long and short arms of the lever 17. A

plurality of supporting rollers 251are roof the platform 2, have their inner ends extativelymounted in vertical recesses 26, provided in the gear wheel 14. The rollers 25 rest upon a circular track 27, mounted upon the platform 2 concentrically with the shaft Brackets 28, secured to. the upper side tending over the upper side of the gear wheel 14 and serve to prevent upward tilting of the gear wheel.

Rigidly secured to the shaft 15, below the platform 2, is a horizontal spur gear wheel 29, adap'ted to be engaged by a horizontal pawl 30 of U shape, having its arms respectively embracing the upper and lower sides and pivotally engaging'a horizontally reciprocative member 31 which is horizontally slidable in bearings .32 secured to the underside of the platform 2. A 'U-shaped pawl 33 has its arms embracing the upper and lower sides of the reciprocative member bar 31.

When the gear wheel 29 is rotated inthe direct-ion indicated by'the arrow in Fig. 4, the pawl 33 will engage the wheel29 and the member 31 will thus be moved to the V right, as viewed in Fig. 4. Continued rotation in the said direction of the gear wheel will force the member 31'to the position shown in Fig.

in which position the pawl 30 will be brought into engagement with the gear wheel 29. hen the bar 31 has been moved to the position shown in Fig. 7, the drum 5 will have been moved, as will be described hereinafter, to a position in which it will'lockingly engage the gear wheel 11 and will thus be locked to the shaft 3. At. this time the pawl 33, being held by the pin 34, will have been moved by the gear 29 to a position just clearing said gear. If now, the gear wheel 29 be rotated in a direction opposite that denoted by the arrow, in Fig. 7, the pawl 30 and the reciprocative member 31 will be forced to the left or to the position shown in Fig. 4, in which position the drum 5 will be disengaged from the teeth of the gear 11, providing that the drum is not supporting a load. This movement of the member 31 will again bring the pawl into engagement with the gear wheel 29.

The mechanism by which reciprocation of the member 31 transmits reciprocation to the drum 5 so as to engage and disengage the drum from the gear wheel 11, will now be described:Referring particularly to Fig. 3, 37 denotes a vertical bar the upper end of which is pivoted to the member 31 and the lower end of which is pivoted to a bracket 38, secured upon the inner side of one of the side members 1. A link 39 is piroted at one end to the bar 37 and at the other end to a vertical lever 40, the upper end of which is pivoted to a horizontal pin 41, which extends transversely across a recess 42, provided in the underside of the platform 2. The head 6 of the drum 5 has an axial hub 43, to which is rigidly secured a collar 44. Slidably mounted on the hub 43, intermediate the head 6 and collar 44, is a ring 45, which is normally held against the collar 44 by a' coil spring 46, which encircles the hub 43 and bears against the head 6. The lower end of the lever 40 is disposed intermediate the fixed collar 44 and the ring 45. The function of the spring 46 is to provide a resilient bearing for the lever 40 so that when the ends of the teeth 9 strike the ends of the teeth 10 the spring 46 will yield and thereby prevent breakage of the parts. The reciprocative member 31 extends through a slot 47 in one of the members 1 and at its outer end is provided with a hand hold 49 by which the member 31 may be reeiprocated independently of the gear 29.

5O denotes a rope which is secured to and adapted to be wound upon the periphery of the drum 5 when the power lever 17 is revolved in the direction indicated by the arrow in Fig. 1.

When it is desired to hoist a load, such as a load of hay, the horse or horses attached to the doubletree 24 are driven so as to revolve the power lever 17 in the direction denoted by the arrow in Fig. 1.' The power lever 17 in revolving will strike against the yoke 18 and its continued movement will rotate the bevel gear wheel 14, which in turn will transmit rotation to the shaft 3 by means of gear wheels 14, gear wheels 12 and 12, intermediate gear wheel 9, and gear wheels 11 and 11. The intermediate gear wheel. 9 is provided so as to effect rotation in like direction of the gear wheels 11 and 11.

As soon as the power lever 17 has started to revolve rotation will be imparted to the shaft 15 and to the spur gear wheel 29 in the direction indicated by the arrow in Fig. 4, which rotation, as already described, will cause the reciprocative member 31 and drum 5, to be moved to the position shown in Fig. 7, in which position the drum will be locked to the gear 11 and will be caused thereby to rotate with the driving shaft 3, thus causing the rope 50 to be wound on the drum so as to lift a load supported by said rope. If it now be desired tosuddenly drop the load this may be accomplished by manually withdrawing the reciprocative member 31 to the position shown in Fig. 4, whereupon the drum 5, as already described, will be free to rotate on the shaft 3 and the weight of the load will then cause it to drop.

It is often desired to slowly lower the load after it has been elevated, so to effect this function mechanism is provided by which the weight of the load acting upon the drum effects, through the drum, a control over the mechanism by which the drum is released from engagement with the driving shaft 3.

The following is a description of the preferred form of mechanism to effect the function just stated :Referring particularly to Figs. 2, 4 and 7, 51 denotes a ratchet wheel secured rigidly upon the shaft 13 and having its teeth always in contact with a pawl bar 52, one end of which is pivoted to one end of a horizontal lever 53, pivotally supported upon a vertical stud 54, extending downwardly from the platform 2. The other end of the lever 53 has connected to it one end of a roc 55 the other end of which is connected to the pawl 30. When the gear 14 is rotated in the direction denoted by the arrow in Fig. 1 the teeth of the pawl bar 52 will slip over the teeth of the ratchet wheel 51 and no action will be effected by the pawl bar. When the gear wheel 14 is rotated in a direction opposite that denoted by the arrow in Fig. 1, the pawl bar 52 will be engaged by the ratchet wheel 51 and willbe drawn in a direction such that it will swing the lever 53 to the position shown in Fig. 4, in which position the pawl 30 will be disengaged from the gear wheel 29 by the rod 55 connecting said pawl with the lever 53. The retraction of the gear wheel 29 in a direc- 7 tion opposite that denoted by the arrow in Fig. 4 will, therefore, not effect sliding of the member 31 in. a direction such as will cause the drum 5 to be released from its locked engagement with the gear wheel 11. Thus by causing the horses toback the gear wheel 14 may be rotated in a direction opposite that denoted by the arrow in Fig. 1, without causing the drum to be released. The load in the meantime, being supported by the drum, will cause the drum to revolve in a direction such that the rope 50 will unwind-therefrom and the load will gradually be lowered until it finally rests upon the ground or other support at which time the rope 50 is manually released from the load. Vhen this occurs the power lever 17 which up to this time has been resting against the right end of the yoke 18, as viewed in Fig. 1, will be freed from pressure caused by the load acting upon the gear 14 through the rope 50, drum 5, andintermediate gearing. The gear wheel 14 will now be at rest but the spring 22 will retract the power lever 17 to the position shown in Fig. 1, thereby rotating the gear wheel 29 in a direction opposite that denoted by the arrow in Fig. 7. By reason of the spring 22 acting quicker than do the horses in backing, the pull of the horses on the lever 17 during the backing movement just described, will immediately after the load has reached the limit of its downward movement and has been released from the rope, effect a slight movement of the gear 14 in the direction indicated by the arrow in Fig. 1, thereby re tracting the ratchet 51 sufliciently to permit the pawl bar 52 being moved to the right, as shown in Fig. 2, thus swinging the lever 53 so that the spring 35 can force the pawl 30 into engagement with the gear wheel 29. This retractive movement of the pawl bar 52 is assisted by means of a coil spring 56, one end of which is secured to the pawl bar 52 and the other end of which is secured to the platform 2, in a position such as to force the pawl bar 52 to the right, as shown in Fig. 2. The pawl 30 thus being engaged with the gear 29, when said gear is retracted by the spring 22 operating upon the lever 17 and shaft 15, the reciprocative member 31 will be moved from the position shown in Fig. 7 to that shown in Fig. 4 and the drum 5 will be, as already described, shifted so as to be released from the gear 11, after which the rope 50 may be readily drawn from the drum.

From the above it will be understood that a load may first be lifted by revolving the power lever 17 in the direction denoted by the arrow in Fig. 1. It may then, by backing the horses, be gradually lowered until it comes at rest upon a support. The drum 5 may then be released from the shaft so that the rope may be quickly withdrawn from the drum by permitting the horses to back still &

farther a short distance. By now driving the horses forward the drum may be again engaged-with the shaft 3 and caused to rotate therewith so as to wind the rope and raise another load.

*Inorder that the drum may be prevented from overrunning when the rope is unwound therefrom, the following described brake mechanism is preferably employed :The head 7 isprovided with a peripheral groove 5.7 inwhich are mounted diametrically opposite the shaft 3, two brake shoes 58 and 59, which are adapted to bear against the grooved periphery of the head. The brake shoe 5.8 is supported upon one end of a bar 60 pivoted upon a horizontal stud 61, secured to the adjacent side member 1. The brake shoe 59 is secured to one end of a bar 62, the other end of which is pivoted by a pin 63 to the bar 60. -A screw 64 extends through and is movable lengthwise ina hole 65 provided in the bar 62. The screw 64 is fitted in a screw threaded hole provided transversely'in the bar 60. Intermediate the head of the screw and the bar 62 is a coil spring 66 which encircles the screw 64. By properly adjusting said screw against the spring 66 thebars 60 and 62 may be forced withay-ielding pressure toward each other so-as to cause the brake shoes '58 and 59 to exert a yielding pressure against the head 7, thereby effecting a braking action upon the drum Various modifications of my invention, within the scope of the appended claims, may be made Without departing from its spirit.

Having thus described my invention, what I claim-and desire to secure by Letters Patent is 2- 1. In power apparatus the combination with a rotary driving shaft, of a drum rotative thereby, and adapted to support a load, releasable means for locking the drum to the shaft, a revoluble power member, means by which, when said member is revolved, said shaft will be rotated, controlling means connecting the locking means and said member for actuating said locking means to lock the drum when said member is revolved in one direction, said controlling means having means controlled by the load for actuating the locking means to release the drum when said member is revolved in the opposite direction and meanscontrolled by the load for rendering the controlling means inoperative to. release the load.

2. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, releasable-means for locking the drum to the shaft, a revoluble power member, means by which, when said member is revolved, the

' .shaft will be rotated, controlling means conn'ecting the locking means and said member for actuating said locking means to lock the drum when said member is revolved in one direction, said controlling means having means for actuating the locking means to release the drum when said member is revolved in the opposite direction and the drum does not support the load, and means by which said controlling means is rendered inoperative by said revo uble member to release the drum when the load is supported thereby.

3. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load,

releasable means for locking the drum to the shaft, a revoluble power member, means for rotating the shaft when said member is revolved, controlling means connecting the locking means and said member for actuating said locking means to lock the drum to the shaft when said revoluble member is revolved in one direction, said controlling means actuating the locking means to release the drum when said revoluble member is revolved in the opposite direction and the load is not supported by the drum, and means by which said controlling means is rendered inoperative by said revoluble member for releasing the drum when the load is unsupported thereby, said controlling means being operative independently of the revoluble member for actuating the locking means to lock the drum to or release it from said shaft.

4. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, releasable means for locking the drum to the shaft, a revoluble power lever, a rotary memher having means for engaging said lever which permits oscillation between pre-determined limits of the lever relative to said rotary member, means for retracting said power lever, means connecting the locking means and said member by which, when the lever is revolved in one direction against said retracting means, the drum will be locked to the shaft, and when the lever is revolved in the opposite direction and does not support the load, the drum will be released from locked engagement with said shaft, means by which the lever is rendered inoperative to release the drum when the load is supported thereby, and means for rotating said shaft when said member is rotated.

5. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, releasable means for locking the drum to the shaft, a revoluble power lever, a rotary member having means for engaging said lever which permits oscillation between pro-determined limits of the lever relative to said rotary member, means for rotating said shaft when said member is rotated, controlling means connecting the locking means and said member by which, when the lever is revolved in one direction, the drum will be locked to the shaft, and when revolved in the opposite direction, and the drum does not support the load, the drum will be released from locked engagement with the shaft, and means by which the controlling means is rendered inoperative to release the drum by means of said lever when the load is supported by the drum.

6. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, releasable means for locking the drum to the shaft, a revoluble power lever, a rotary member having means for engaging said lever which permits oscillation between predetermined limits of the lever relative to said rotary member, means for transmitting rotation from said rotary member to said shaft, controlling means connecting the locking means and said member by which, when the lever is revolved in one direction, the

drum will be locked to the shaft and when the lever is revolved in the opposite direct-ion and the drum does not support the load, the drum will be released from said shaft, and by which said controlling means is rendered inoperative by said lever to release the drum when the load is supported thereby, said con trolling means being operative independently of the lever for releasing the drum from said shaft.

7. In a power apparatus, the combination with a rotary driving shaft, of a drum rotative and longitudinally movable thereon and adapted to support a load, means for locking and unlocking the drum to the shaft when the drum is reciprocated longitudinally thereon, a revoluble power member, means for rotating said shaft when said member is revolved, controlling means connecting the locking means and said member for moving the drum to and from the locked position when said member is oscillated, and means controlled by the load for controlling the operation in one direction of said controlling means.

8. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, releasable means for locking the drum to the shaft, a revoluble power member, means for rotating said shaft when said member is revolved, controlling means connecting the locking means and said member for actuating the locking means to lock the drum to the shaft when said member is revolved in one direction, said controlling means having means controlled by the load for actuating the locking means to release the drum when the drum is revolved in the opposite direction and means controlled by the load for ren dering the controlling means inoperative to release the drum, said controlling means being operative independently of said revoluble member.

9. In power apparatus, the combination with a rotary driving shaft, of a drum rotative and longitudinally movable thereon and adapted to support a load, means for locking and unlocking the drum relative to the shaft when the drum is longitudinally reciprocated, a revoluble power member, means for rotating saidshaft when said member is revolved, controlling means connecting the locking means and said member for moving the drum into the locked position when the revolublemember is revolved in one direction, said controlling means having means for moving the drum to the unlocked position when said revoluble member is revolved in the opposite direction and the drum does not support the load, and means by whlch said controlling means is rendered inoperative by said revoluble member to release the drum when the load is supported thereby.

10. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, a revoluble power member, means for rotat- 'ing said driving shaft when the revoluble member is revolved, a reciprocative member, means for reciprocating member when said revoluble member is revolved in opposite directions, means controlled by the load for controlling the movement of said reciprocative member in one direction, and means for locking the drum to and unlocking it from the driving shaft when said reciprocative member is reclprocated.

11. In power apparatus, the combination with a rotary drivin shaft, of a drum rotative thereby and adapted to support a load, a power lever, means for rotating the drW- ing shaft when the power leveras swungy a rotary gear wheel, means for oscillating said gear wheel by the swinging of said power lever, a reciprocative member, means for moving said reciprocative member when the gear wheel is oscillated, means controlled by the load for controlling the movement of said reciprocative member in the one direction, and means for locking the drum to and unlocking it from the driving shaft when said reciprocative member is reciprocated.

12. In power apparatus, the combination with a rotary driving shaft, of a drum rotative thereby and adapted to support a load, a rotary gear wheel, a revoluble power lever, means actuated by said lever for rotating said gear wheel, means for rotatin said driving shaft when said lever is revol ved, a reciprocative member, two pawls mounted on said reciprocating member and engaging said gear wheel for reciprocating said member when the gear wheel is rotated in opposite directions, means controlled by the load forcontrolling the engagement of one of said pawls with said gear wheel, and means for locking said drum to and unlocking it from the driving shaft when said reciprocat-ive member is reciproca-ted.

'13. In power apparatus, the combination with arotary driving shaft, of a drum rotative thereby and adapted to support a load, a rotary gear wheel, a revoluble power lever, means actuated by said lever for rotating saidgear wheel,means for rotating the driving shaft when the lever is revolved, a reciproeative member, two pawls mounted on said reciprocat-ive member and adapted toengage said gear wheel, one pawl forcing said reciprocative member in one'direetion when the gear wheel is rotated in one direction, the

second pawl engaging said gear wheel to force the reciproeative member in the opposite direction when the. gear wheel is rotated in the opposite direction, means by which the latter named pawl is held disengaged from said gear wheel when a load is upon the drum, and means for locking the drum to and unlocking it frointhe driving shaft when the reciprocative member is re ciprocated.

14-. In power apparatus-,thecombination with a rotary driving shaft, of a drunrrotative thereon and adapted to support a. load and longitudinally reciarocative 'on said shaft, means for 'loclring said drum to and unlocking it from said shaft when the drum is longitudinally reciproeated, a revoluble member, a reciproeative member, means for rotating said shaft when the revoluble member is revolved, means for reciprocating said reciprooative member when the revoluble 'member' is oscillated, means connected with the drum by which the revoluble member is rendered inoperative to move the reciprocative member in one direction when the drum supports a load, and means for longitudinally reciprocating the drum when the reciprocative member is reciprocated.

15. In power apparatus, the combination with a rotary driving shaft, of a drum adapted to be rotated thereby and adapted to support a load, releasable means for locking the drum to the shaft, means for rotating the shaft, controlling means connecting the shaft rotating means and locking means for actuating said locking means to lockthe drmn to the shaft when the shaft is rotated in one direction, said controlling means having means controlled by the load for aetnating the locking means to release the drum when the driving shaft is rotated in the opposite direction, and means controlled by the load for rendering the controlling means inoperative to release the ing the drum to the shaft, means for rotating the shaft, means controllable by said shaft rotating means for actuating the locking means to lock the drum to and release it from said shaft when. the shaft is rotated in opposite directions respectively, and means by which the controlling means is rendered inoperative by said shaft rotating means to release the drum when the drum supports a load.

17. In power apparatus, the combination with a rotary driving shaft, of a drum adapted to be rotated thereby and. adapted to. support a load, releasable means for locking the drum to the shaft, means for rotating the shaft, means controllable by said shaft rotating means for actuating the locking means to lock the drum to and release it from said shaft when the shaft is rotated in opposite directions respectively, and means by which the controlling means is rendered inoperative by the shaft rotating means to release the drum when the drum supports a load, said controlling means being operative independently of the shaft rotating means.

18. In power apparatus, the combination with a rotary driving shaft, of a drum, releasable means for locking the drum to the shaft, a reciprocative member, two pawls carried bysaid member, a gear wheel adapted to be alternately engaged by said pawls for moving the reciprocative member in opposite directions, a rotary member to which the gear wheel is secured, means operated by said reciprocative member for sliding the drum to engage and disengage the locking means, and means connected with one of said pawls and said drum for disengaging the last named pawl from the gear wheel when the drum supports a load.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

JOHN F. SPER-RY.

Vitnesses v J. A. BARNETT, E. W'. GINonIoH.

Images