Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS369860 A
Publication typeGrant
Publication dateSep 13, 1887
Publication numberUS 369860 A, US 369860A, US-A-369860, US369860 A, US369860A
InventorsDaniel E. Kempster
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 369860 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

(No Model.) '4 Sheets-Sheet 1.


VELOGIPEDE. No. 869,860. Patented Sept. 13, 1887.

4 Sheets'-Sheet 2.

(No 'Model.)



Patented S t. 13, 18 87.

(No Model.) 4 Sheets-Sheet 3.



No. 369,860. Patented Sept. 13, 1887.

(No Model.) 4 Sheets-Sheet 4.



Patented Sept. 13,1887.

N. PETERS, Pw al hlfio hur. Washinglon. n. c.




SPECIFICATION forming part of Letters Patent No. 369,860, dated September 131, 1887.

Application filed April 7, 1887. Serial No. 234,029.

To all whom it may concern.-

Be it known that I, DANIEL E. KEMPSTER, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in RowingTricycles or Vehicles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to rowing tricycles or vehicles similar to that patented by me September 16, 1884, and numbered 305,198.

My improvements which I now desire to secure are herein fully described, and specially pointed out in the claims.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a top plan view of my rowi'ng-tricycle; Fig. 2, a longitudinal vertical section Q on the line x in Fig. 1; Fig. 3, a perspective view of the tricycle,showing an oarsman in the act of rowing; Fig. 4, a side elevation, partly in section, of the righthand clutch and clutchpulley removed from the driving-wheel; Fig. 5, a vertical longitudinal central section of the right-hand driving-wheel hub, its attached clutch, clutch-pulley, axle, and a portion of the frame; Fig. 6, a rear elevation of the U- shaped frame, sliding seat, and axles with driving-wheel hubs thereon; Fig. 7, a longitudinal vertical section of one of the foot-bar clamps; Fig. 8, a perspective view of one of the pulling handles or slides with its antifrietional roller-bearings and a portion of the propelling-cord attached, also a longitudinal section of one of the hollow screws for adj usting said cord.

Reference being had to the drawings, the frame or body of the machine is composed of the U-shaped axle or portion a, the side bars or portions, a a, the front cross-bar, a and the rearwardly extending and upwardlycurvcd arms a a.

b bare the driving-wheels, the hubs of which have screwed fast on their inner sides the clutches c c. The driving-wheels, with their (No model.)

clutches attached thereon,'are loosely mounted on axles d d, extending out from the frame a, i

and are provided with ball-bearings and means for adjusting the same in the usual manner with this class of vehicle.

e is the steering-wheel, mounted in the forked spindlef, which terminates in a central hearing or steering-head, g, on the cross-bar a. The wheel 6 is provided with a mud-guard, h, attached to the fork, as usual. The cross-bar a hasloosely pivoted on its ends small grooved guide-pulleys is k, and the curved arms cfa of the frame have also loosely pivoted thereon small grooved guide-pulleys 7a In. Parallel rods Z Z extend from the cross-bar a to the curved arms a, and are held rigidly by check-nuts m thereon.

at n are flexible bands or cords of any strong pliable material, preferably wire rope. 0 0 are the grooved clutch-pulleys, mounted loosely on shoulders or hearings on the sides of the clutches fast on the driving-wheel hubs, and are held on said clutches (so as to freely revolve thereon) by the circular plates or flanges 0'0, affixed by screws to the side of the said clutch-pulley.

Within the cam-shaped recesses formed in the clutches c are placed a number of loose balls or rolls, c,which wedge between the clutch and clutch-pulley when said pulley is revolved in one direction, thus locking together the said pulleys and. driving-wheels, and revolving the latter in the proper direction to propel the tricycle forward. As the clutchpulleys are revolved in a reverse direction, they instantly free themselves from engage ments, so as to permit the clutches and their drivingwheels to continue their revolutions in a forward direction. The bottom of the groove in the clutch-pulleys is faced with leather or rubber, 0 which prevents the wire cord from slipping when the power is applied thereto. If preferred, the leather or rubber facing may be dispensed with, and the cord be prevented from slipping by winding it several times around the clutch-pulley, and, if necessary, attach it thereto at a point which would not unwind from off said pulley in the ordimachine, and is adapted to be adjusted and held fast on the frame by the screw-clamps p 19. On said foot-bar are the sandals (1 q, hung so as to swivel thereon, and are provided with the foot-straps q q. On thetoes of said sandals are attached the connecting-rods r r by the ball-and-socket joints r 1". Said rods are made in two parts, so as to telescope together, or be adjusted as to their length, and are held rigidly by the screws r 1. These rods are connected or pivoted to short armsff on the forkf, and thus bya slight pressure of the toe of either foot the fork f is caused to swivel and turn the wheel e, so as to steer the tricycle in any direction desired. 8 s are the spoon brakes, and s the brake-lever, all of which are fast on the brake-shaft 8 extending across the machine.

t t are the pulling-handles on the slides t t. Said slides are provided with anti-frictional bearings or rolls 1 for running on the rods or supports U, and they are also provided with hollow screw P, which, by turning so as to unscrew, forms a means of tightening up the cords n, as they stretch from constant use. One end of said cord passes through said screw, and is prevented from drawing out by a knot or ball affixed on the end thereof, and the opposite end of the said cord is firmly attached to the opposite end of the said slide. Thus it will be seen that the propelling-cords are practically endless, as both ends of the same are attached to the same pulling-handle or its slide, which amounts to the same thing, the said slides being mounted on their respective rods or supporting-ways Z Z, and free to reciprocate thereon. I

As shown in Figs. 1, 2, and 3, the cords n pass from the pulling slide forward down around the guide-pulley k on the front of the machine, thence backward to and once around the clutch-pulley 0, and then still backward to and up around the guide pulley k on the arms of, and then forward to the pulling-slides, where they are adj ustably attached. The movement of these pulling slides back and forth, as in act of rowing, oscillates the clutchpulleys, and thus alternately'locks and releases their clutches, and thereby causes the rotation of the driving-wheels in the direction to propel the tricycle forward.

a is the reciprocating seat, having anti-frictional rollers, and o v are parallel bars forming ways or tracks for said roller-seat, the said bars being supported by the frame a and a spring, 8 over the brake-shaft.

The capability of adjustment of the foot-bar p and connecting-rods r. r adapts the tricycle to the use of any person, no matter what the length of leg, as the machine can be readily adjusted to lit the rider and bring his weight over or near the center of the driving-wheels, where desired to obtain the best result.

The construction of the frame with the two side pieces, a a, rigidlyjoining a front crossbar, as shown in Figs. 1 and 3, makes the frame more adaptable to a fore-and-aft adjustment of the foot-bar, and also adds great strength to the frame for supporting the lateral strain occasioned by the steering wheel turning short curves when the tricycle is traveling at a rapid rate of speed.

The construction of the frame with the rearwardly-extending portions or arms a a is a great advantage, as by so doing I am able to obtain a great length of stroke, as required in rowing, on a comparatively short machine, which adapts it to great speed and to readily turning short curves, the stability of the machine being fully insured by the U-shaped frame bringing the center of gravity below the centers of the driving-wheels, the frame of the tricycles being composed of weldless steel tubing properly bent and brazed together, thereby producing a machine very compact, strong, and light.

The pulling-handles are capable of swiveling as well as reciprocating on their supporting ways or rods Z Z, and-thereby permit said handles to rise and fall, and thus adjust themselves to varying positions of the hands, as required for different parts of the stroke. Furthermore, said pullinghandles being entirely independent of each other permits their use alternately, as in canoe practice, and also facilitates the turning of the tricycle, as one handle may be pulled stronger than the other, and thus assist in turning the machine.

I do notwish to confine myself to the use of only three wheels on my machine, as my improvements are equally applicable to vehicles having four or more wheels, and I now contemplate the construction of vehicles embodying my inventions capable of carrying two, three, or four riders or rowers, and the special features of their construction will form the subject-matter of future applications for Letters Patent.

I claim-- 1. In a rowing tricycle or vehicle, in combination, the driving-wheels, the clutches fast thereon, the clutch-pulleys loosely mounted on said clutches, the balls or rolls between said clutches and pulleys to lock them together in one direction, the flexible connections or cords around said pulleys, the frame, the guidepulleys pivoted thereon and supporting said cords, the parallel reciprocating handles, pull ing-handles having said cords attached thereto, and the parallel rods or ways for support ing said handles, all substantially as shown and described, for the purpose set forth.

2. In a rowing tricycle or vehicle, the pulling-handle and its attached connection or cord, in combination with means on said handle for adjusting said cord, as set forth.

3. In a rowing tricycle or vehicle, the com bination, with the independent pulling-handles, of the parallel ways or rods for supporting and guiding said handles, and the endless cords attached thereto for revolving the driving-wheels, substantially as set forth.

4. In a rowing tricycle or vehicle, the frame having the upwardly-curved and rcarwardlytoo IIO

extendin ortions or arms (Z5013 whereb a great length of stroke may be obtained upon a comparatively short machine, substantially as shown and described.

5. In a rowing tricycle or vehicle, the frame composed of the U-shaped portion a, theside pieces, a a, the cross-bar a and the rearwardly-extending arms a a substantially as and for the purpose set forth.

6. In a rowing tricycle or vehicle, the inde pendent pulling handles having anti-frictional bearings thereon, combined with round supporting-rods or means whereby said handles are adapted to rise and fall, and thus adjust themselves as they are reciprocated, substantially as and for the purpose set. forth.

7. In a rowing tricycle or vehicle, in combination, the parallel ways or rods, the independent pulling handles having anti-frictional roller-bearings supported and guided thereby, and the endless flexible bands or cords attached to said handles, substantially as and for the purpose set forth.

8. In a rowing tricycle or vehicle, in combination,the oscillating endless cords or bands for transmitting the power, suitable supporting-pulleys for them, parallel reciprocating independent pulling-handles attached to said cords, and clutches operated by the latter and adapted to engage and revolve the drivingwheels and propel the machine along, substantially as set forth.

9. In a rowing tricycle or vehicle, in combination, the frame, the foot-bar made adj ustable thereon, the pivoted sandals on said bar, the connectingrods attached to said sandals by the universal or baIland-socket joint, and the steering-wheel fork pivoted to one end of said rods, which rods are made to telescope together, and means for holding them in position, substantially as and for the purpose set forth.

10. In a rowing tricycle or vehicle, the steering-wheel telescoping connecting-rods r r, having the fastening-screws 1 W, for the purpose set forth.

11. In a rowing tricycle or vehicle, in com-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4126329 *Jun 21, 1977Nov 21, 1978Tchernyak Shimon SWheeled vehicle with oar-type propulsion
US5536029 *Mar 13, 1995Jul 16, 1996Gramckow; JurgenRowing powered cycle
US6764089Mar 20, 2002Jul 20, 2004Robert DrymalskiManually powered drive mechanism and vehicle employing same
US7195264Jul 2, 2004Mar 27, 2007Robert DrymalskiManually powered vehicle having improved steering
US7753386Mar 26, 2007Jul 13, 2010Robert DrymalskiSteering mechanism and method for a manually powered vehicle
US8157280Jun 29, 2010Apr 17, 2012Morse Cycle Company LlcManually powered drive mechanism with steering member and vehicle employing same
US8511188Jul 1, 2010Aug 20, 2013Richard J. CaspersLinear kinetic energy to rotational kinetic energy converter
US8783703Oct 31, 2012Jul 22, 2014Richard J. CaspersMechanical torque multiplier and evener mechanism
US20050087952 *Jul 2, 2004Apr 28, 2005Robert DrymalskiManually powered vehicle having improved steering
US20120061938 *May 22, 2009Mar 15, 2012Luciano LilloVehicle at Contemporary Stretching and Contraction Action of the Lower and Upper Limbs
Cooperative ClassificationB62K3/002