US787381A - Hand-car. - Google Patents

Description

No. 787,381 PATBNTED APR. 18, 1905. P. J. KAMPER.

HAND GAR.

APPLICATION FILED AUG. 24,1904.

2 SHEETS-SHEET 2.

'i No. 787,381.

Patented April 18, 1905.

IVINTTED STATES ATENT OFFICE.

PAUL J. KAMPER, OF SIOUX CITY, IOWA.

HAND-CAR.

SPECIFICATION forming4 part of Letters Patent NO. 787,381, dated April 18, 1905.

Application filed August 24, 1904. Serial No. 222,001.

manually-operated type, and has particular 1 IO reference to the actuating mechanism to overcome numerous disadvantages heretofore encountered in devices of this class.

One of the special features of construction in the present invention is the adaptability of 5 application thereof to hand-cars now in use through the medium of adjustable means consisting' of a screw-threaded connection between the primary actuating means and the driving` device to accommodate a variation in .F vertical extent of the gallows with respect to the main driving or master gear, thus providing for economy in the substitution of the several parts in the event of wear by reason of the fact that a new rack-bar only will be required to be replaced or applied in old constructions without affecting the usefulness or practical operation of the driving' mechanism controlled by the said rack-bar. lIn the present instance a double iacl;l)ar is used, or, in other words, a bar having rack-teeth on opposite sides, and the latter is adjustably connected to talte up wear with a crank attachment for operating' the master-gear. A\Ieshing with the rack-bar are specially-constructed reversible gears or actuating' ele ments which may be turned or revolved in their supporting means to bring' new surfaces or parts in cooperation with the opposite teeth of the rack-bar, and thereby prolong' the service of the said primary mechanism. 'I`he g'car elements in the present construction are inclosed by or held between headdisks, to which operating-levers or hand-bars are attached, and the advantage derived, from an economical standpoint, in this direction is that the said head-disks may be released from the gear elements and the latter turned to bring' new portions thereof in connection with the rack-bar and at the same time conline the rack-bar in accurate registration with the teeth of the gear elements and thus insure a. positive actuation of the main or master g'ear. By the present construction and arrangement of rack-bar and actuating-gear operatives and those occupying the hand-car will be protected from injury in view of the fact that the rack-bar is guarded or held between the head-disks and in such position with respect to the gallows in such manner as to prevent engagement with the clothing' or body parts of those adjacent thereto.

In the drawings, Figure I isa side elevation of a hand-car embodyingl the features of the invention. Fig'. is a longitudinal vertical section of the same. Fig'. 3 is a detail perspective view of one of the hand-bars and the hcaddisl{s attached thereto. Fig'. I isa detail perspective view of one of the gear elements, which is reversibly disposed in the hand-bars.

Similarnumerals of reference are employed to indicate correspondingparts in the several views.

The numeral I designates a hand-carframe of the usual construction, but in the present instance is preferably formed with side and end bars Q and 3, an intermediate cross-bara, and longitudinal supporting-bars 5. In suitable bearings (i, secured to the side bars, rotatable axles T are mounted and have thereon traclt.- wheels 8. 'Ihe one axle has secured thereto a pinion 9 for driving' purposes, and meshing' therewith is a spur or master gear I0, mounted on a crank-shaft Il, held bythe supporting-bars Rising from the supporting-bars 5 isa g'allows-frame l2, suitably braced and strengthened to compensate for the strain brought to bear thereon in the operation of the mechan ism for propelling the hand-car. On the g'allows-frame 12 bearing' or cap bars I3 are secured and receive the shafts 1I, lixed to gear elements I5, which are confined in longitudinal alinement between the upper portions of the gallows-frame or the bearing'or cap bars. Ihe gearelements I1 comprise opposite headdisks I5, removably secured to gears 16 and also having attached thereto the yolted ends IT of hand-bars IS. l`he gear elements are spaced apart from each other a sufficient dislOO tance to operatively receive between them a double rack-bar 19, adjustably connected to a rod or connecting-bar 20, attached to the crank of the shaft l1, the lower end of the double rack-bar being provided witha screwthreaded socket 2l to receive the upper screwthreaded extremityoi" the rod or connectingbar 20. By this means the rod or connecting-bar is rendered adjustable to accommodate the application of the operating mechanism to hand-cars now in use and also to take Aup wear of the several parts to insure a positive stroke or operation of the rod. It will be observed that the connecting rod or bar is direct-acting with respect to the master-gear, and in the event that the gear elements meshing with the double rack-bar become worn the said elements may be reversed in view of the fact that they are secured solely by screws 22 passing through the head-disks l5 into the gears 16, which may be removed when desired. The yoked ends 17 of the hand-bars are countersunk in the head-disks of the gear elements, as at 23, and the terminals of said yoked ends loosely bear on the shafts for the gear elements. This arrangement provides for a strong assemblage of the several parts and also insures a positive operation.

It will be understood that the platform of the car may be composed of boards or planks of the usual thickness adopted in hand -car constructions and arranged to -provide the necessary or most platform-space possible within a minimum surface area.

The circular form of the gears which are held in continual mesh with the double rackbar makes it possible to oscillate the latter without break or irregularity, and, furthermore, the head-disks confining the gears maintain the rack-bar in positive perpendicular position and obstruct the latter vfrom moving laterally or sidewise, with material advantage in the avoidance of lost motion by impositive contact.

It will be observed that operators grasping the opposite hand-bars and imparting motion to the gears and the disk-heads will cause the vertical reciprocation of the rack-bar and connecting-rod attached thereto and result in a reliable rotation of the master-gear and the pinion connected to one of the car-axles. In the present instance the mastergear with which the rack-bar directly operates is of materially greater diameterthan the pinion on one of the car-axles held in continual mesh therewith, and by this means a regular rotation oi" the master-gear under normal speed conditions will cause a materially greater rotation of the pinion and axle to which it is attached, with obvious advantages in propulsion. Furthermore, the hand-car embodying the features of the present invention is of a light, strong, and durable nature, and the same principle and construction might l be readily embodied in a construction of greater magnitude by varying the proportions, dimensions, and minor details.

Having thus fully described the invention, what is claimed as new is-- l. In a hand-car, the combination of a frame having wheeled axles, one of the axles carrying a pinion, a master-gear meshing with the pinion, a crank-shaft on which the mastergear is disposed, a gallows rising Jfrom the frame, a connecting-rod attached to thecrank of the shaft on which the master-gear is mounted, the connecting-rod being movable directly over the one face of the master-gear, a double rack-bar attached to the upper extremity of the connecting-rod, and prime operating means held by the gallows and engaging opposite sides of the rack-bar.

2. In a hand-car, the combination of a frame having wheeled axles, one of the axles having a pinion thereon, a master-gear held by the frame and meshing with the pinion, a double rack-bar for operating the master-gear, and prime operating means supported above the frame and meshing with the opposite sides of the rack-bar, the rack-bar and the said prime operating means being adjustable to take up wear.

3. In a hand-car, the combination of a frame having wheeled axles, a gallows supported thereon, reversible gears held on the gallows, a double rack-bar movably disposed between and held in continual mesh with the gears, and driving mechanism for one of the axles and to which the said rack-bar is attached.

4. In a hand-car, the combination of a frame having wheeled axles, driving mechanism held by the frame and one of the axles, a double rack-bar attached to a part of the driving mechanism, reversible gears supported above the frame and engaging the opposite sides of the rack-bar, heads movably attached to the gears, and hand-bars having inner yoked extremities engaging the heads.

5. The combination with a hand-car having driving mechanism for one of the axles, of a double rack-bar movably connected to a part of the driving mechanism, reversible gears held above the driving mechanism in close mesh with the opposite Sides of the rack-bar, and means for operating the gears to actuate the rack-bar.

6. The combination with a hand-car having driving mechanism cooperating with one of the axles thereof, of a gallows thereon, gears having fixed shafts terminally held on the upper portion of the gallows, a double rack-bar movably disposed between the said gears and connected to a part or' the driving mechanism, heads movably applied to opposite portions of the gears and operating to maintain the rack-bar in true vertical position, and handbars having inner yoked extremities let into the heads and provided with terminals engaging the shafts.

f` 'IL 7. The combination with a hand-car having actuating mechanism for one of the axles thereof, of a double rack-bar connected to a part of the said mechanism, gears held above the mechanism and engaging opposite sides of the rack-bar, heads removably and rotatably mounted against opposite sides of the gears, and hand-bars connected to the heads.

b. In a hand car, the combination of a wheeled frame having' axles, one of the axles being provided with a pinion, a crank-shaft mounted in a portion of the frame, a mastergear eentiall)Y connected to the crank-shaft, a double rack-bar attached to the crank of the said shaft and movable over one side of the master-gear, and gear elements held above the mechanism and engaging the opposite sides of the rack-bar, said gear elements conlining the rack-bar between them and having' projecting-heads extending over the teeth of the rack-bar engaging the sam'e to prevent Contact therewith, of adjacent members.

In testimongv whereotl l have hereunto set my hand in presence of two subscribing Witnesses.

PAU L J. KAMPEH.

lVitnesses:

C. WV. TAYLOR, M. C. BUTLER.

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