US1361382A - Method and means of springing the driving-wheels of cycles, motorcycles, cycle-cars,or the like - Google Patents

Method and means of springing the driving-wheels of cycles, motorcycles, cycle-cars,or the like Download PDF

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US1361382A
US1361382A US309094A US30909419A US1361382A US 1361382 A US1361382 A US 1361382A US 309094 A US309094 A US 309094A US 30909419 A US30909419 A US 30909419A US 1361382 A US1361382 A US 1361382A
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cycle
driving
springing
cycles
wheel
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US309094A
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Harmer Ernest Frederick
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/10—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2201/00—Springs used in cycle frames or parts thereof
    • B62K2201/04—Helical springs

Definitions

  • This invention relates to a method and means for springing the driving wheel of a cycle, motor cycle, cycle car or the like, and has for its object to provide an improved device which will'perform the usual functions of a spring frame in absorbing vibrations and preventing said vibrations from being transmitted to the frame of the machine; and further will insure that the distance between the wheel spindle and the axis of the pulley or like driving means will remain unaltered at any position of the spring wheel in respect to the frame.
  • the line of travel described by the driving wheel axle is thus constantly concentric with the engine or gear box pulley, sprocket wheel, or bevel pinion in case of shaft drive.
  • I provide at each side of the machine two sliding members set at a suitable angle say in a boss or collar into which the wheel axle 1s suitably secured, and to arrange that the are de-' scribed by their apex or point of intersection (coincident with the'boss or the like) shall be concentric to the axis of the pulley or the like.
  • These sliding members slide through fixed points which are equidistant or substantially so from the said axis.
  • the said fixed points may be comprised of trunnions suitably disposed in projecting arms or in a frame piece integral with or fitted at the intersection of the frame back forks. These trunnions are rotatably mounted in hearings in the said frame member so that they may revolve sufficiently to permit the slidin movement of the arms therein through the fixed points.
  • the spring may for example be applied as a helical or volute spring between one of the fixed points and the part carrying the wheel axle, or as a laminated SPIll'lgbGEtIlIlg upon one of the sllding members or 1n any other manner so that it yieldingly resists the move scribed from the axis of the driving pulley or the like, and a pair of sleeves are fitted one on each inclined part, and are mounted by knuckle joints to a bracket to which the wheel axle is secured.
  • the sleeves and the bracket are thus adapted to slide upon the angle member so that the wheel axle describes a path substantially concentric with the pulley or like'axis.
  • a spring may be applied in any suitable manner between the bracket and frame to yieldingly resist the sliding movement of the wheel bracket on the said members or arms.
  • FIG. 1 shows examples of the invention applied to a motor cycle frame in which F igure 1 a side elevation showing one embodiment with a helical spring arrangement.
  • V r shows examples of the invention applied to a motor cycle frame in which F igure 1 a side elevation showing one embodiment with a helical spring arrangement.
  • Fig. 2 is a detail view of the sliding members in the arrangement seen at Fig. 1.
  • Fig. 3 is a view taken at right angles to Fig. 2 showing the back with spring removed.
  • Fig. 4 is a side elevation showing another embodiment of construction with helical spring contained in casing.
  • Fig. 5 is a sectional elevation of the sliding members seen at Fig. 4. i
  • Two sliding members a and Z; at each side of the machine are set at a suitable angle to one another in a boss or collar 0 into which the wheel axle (Z is suitably secured, as in Fig. 1, or these sliding members may be set in a frame (2 as in 5 into which a boss or collar is slidably adjustable in a guide 9 therein and set by bolts h, to adjust the tension on a chain drive, for example.
  • the sliding members slide through fixed points 7' and is which are equidistant or substantially so from the axis of the pulley z or like driving means.
  • the said fixed points j and 7: are comprised of trunnions Z rotatably mounted in bearings r and s in arms m and a respectively, in a frame piece '0 integral with or fitted at the intersection of the frame back forks p and Q so that the said trunnions may turn in accordance with the sliding movement of the arms through the fixed points.
  • the bearing 8 is slidably adjustable on the arm n to adjust and set the fixed point equidistant from the pulley z or like driving means, and the trunnions Z are laterally adjustable in the bearings r and '8 by screws 2, and u to compensate for any small errors in assembling, which screws after being set to the desired position are secured against accidental unscrewing by a screw '0 on the threads.
  • Laminated springs may also be fitted to the underneath side of the rear fork members to yieldingly resist the upward movement of the arm 6 and the wheel axle.
  • the carrier back stay 11 is fixed at the ex tremity of the upper projecting arm m and is thus sprung equally With the frame, while I the stand 12 may be secured in the usual way to the extremity of the projecting arm a.
  • the fixed points 13 and 14L are mounted in independent lugs 15 and 16 respectively joined by a bar or tubular member 17, while said lugs are brazed or otherwise secured on chain stays 18 and 19, and the lug 15 is further bolted or otherwise secured to the back stay 20.
  • a suitable casting 23 incloses the spring 21 and a dust cover 22 is mounted on the top of lug 15' inside which cover will travel the sliding member a.
  • I claim V Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like, consisting in mounting the wheel at the angle of pairs of straight sliding meming wheel of a cycle, motor cycle, cycle car,
  • Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like comprising a frame member at each side of the wheel carrying pivotal bearings at fixed points equidistant from the axis of the driving means, a pair of straight members in each frame member set at an angle to each other and sliding in said bearings, a connection for the wheel axle at the point of intersection of the pair of straight members, and a spring to resist the movement of the wheel and the consequent sliding of said straight members in said bearings.
  • Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like comprising a frame member at each side of the wheel, said frame member carrying pivotal bearings at points fixed equidistant from the axis of the driving means, a pair of straightmembers set at an angle to eachother' and sliding in the said bearings on each side of the wheel on said frame members, a connection for the wheel axle at the point of intersection of the pair of straight members, and the application of a spring to resist the movement of the wheel and the consequent sliding of said members in said bearings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Description

E. F. HARMER.
METHOD AND MEANS OF SPRINGING'THE DRIVING WHEELS OF CYCLES. MOTORCYCLES, CYCLE CABS OR THE LIKE.
APPLICATION FILED JULY7,1919- 1,361,382, Patented Dec. E5320.
5 SHEETS-SH .E. F. HARMER.
METHOD AND MEANS OF SPRINGING THE DRIVING WHEELS 0F CYCLES, MOTORCYCLES,
' CYCLE CARSOR THE LIKE.
APPLICATION FILED JULY 7, I919.
Patented Dec. 7, 1920.
5 SHEETSSHEET 2.
E. F. HARMER. METHOD AND MEANS OF SPRINGING THE DRIVING WHEELS 0F CYCLES, MOTORCYCLES,
CYCLE CARS OR THE LIKE. APPLICATION FILED JULY 7| I919.
1 361 382. Patented. Dec. 7, 1920.
FZlglfTS-gEET 3- Z,
. E. F. HARMER. METHOD AND MEANS OF SPRINGING THE DRIVING WHEELS 0F CYCLES, MOTORCYCLES, CYCLE CARS OR THE LIKE.
APPLICATION FlLED JULY 7, 1919.
1,3 1,332, Patefited Dec. 920.
I EETS EE 4.
W #fuM E. F HARMER.
METHOD AND MEANS OF SPRINGING THE DRIVING WHEELS 0F CYCLES, MOTORCYCLES,
CYCLE CARS OR THE LIKE.
APPLICATLON 'FILED JULY 7, 1919.
Patented Dec. 7, 1920.
5 SHEETS-SHEET 5.
UNITED STATES PATENT OFFICE.
ERNEST FREDERICK HARMER, or SOUTHAMPTON, ENGLAND.
METHOD AND MEANS= 0F SPRINGING THE DRIVING-\VHEELS 0F CYCLES, MOTOR- CYCLES, CYCLE-CARS, OR THE LIKE.
Specification of Letters Patent.
Application filed July 7, 1919. Serial No. 309,094.
To all whom it may concern:
Be it known that I, EnNEs'r FREDERICK HARMER, subject of the King of Great Britain, and residing atGresham Villa, Mansion Road, Southampton, England, civil engi' neer, have invented a certain new and useful Improved Method and Means of Springing the Driving-Wheels of Cycles, Motorcycles, Cycle-Cars, or the like, of which the following is a specification.
This invention relates to a method and means for springing the driving wheel of a cycle, motor cycle, cycle car or the like, and has for its object to provide an improved device which will'perform the usual functions of a spring frame in absorbing vibrations and preventing said vibrations from being transmitted to the frame of the machine; and further will insure that the distance between the wheel spindle and the axis of the pulley or like driving means will remain unaltered at any position of the spring wheel in respect to the frame. The line of travel described by the driving wheel axle is thus constantly concentric with the engine or gear box pulley, sprocket wheel, or bevel pinion in case of shaft drive.
To attain this object I utilize a Well known geometrical function whereby any two straight lines inclined at an angle to one an other, if slid along in contact with two fixed points, will at their point of intersection describe a portion of a circle.
In accordance with my invention I provide at each side of the machine two sliding members set at a suitable angle say in a boss or collar into which the wheel axle 1s suitably secured, and to arrange that the are de-' scribed by their apex or point of intersection (coincident with the'boss or the like) shall be concentric to the axis of the pulley or the like. These sliding members slide through fixed points which are equidistant or substantially so from the said axis.
The said fixed points may be comprised of trunnions suitably disposed in projecting arms or in a frame piece integral with or fitted at the intersection of the frame back forks. These trunnions are rotatably mounted in hearings in the said frame member so that they may revolve sufficiently to permit the slidin movement of the arms therein through the fixed points.
The spring may for example be applied as a helical or volute spring between one of the fixed points and the part carrying the wheel axle, or as a laminated SPIll'lgbGEtIlIlg upon one of the sllding members or 1n any other manner so that it yieldingly resists the move scribed from the axis of the driving pulley or the like, and a pair of sleeves are fitted one on each inclined part, and are mounted by knuckle joints to a bracket to which the wheel axle is secured. The sleeves and the bracket are thus adapted to slide upon the angle member so that the wheel axle describes a path substantially concentric with the pulley or like'axis. A spring may be applied in any suitable manner between the bracket and frame to yieldingly resist the sliding movement of the wheel bracket on the said members or arms.
The drawings show examples of the invention applied to a motor cycle frame in which F igure 1 a side elevation showing one embodiment with a helical spring arrangement. V r
Fig. 2 is a detail view of the sliding members in the arrangement seen at Fig. 1.
Fig. 3 is a view taken at right angles to Fig. 2 showing the back with spring removed.
Fig. 4 is a side elevation showing another embodiment of construction with helical spring contained in casing.
Fig. 5 is a sectional elevation of the sliding members seen at Fig. 4. i
Two sliding members a and Z; at each side of the machine are set at a suitable angle to one another in a boss or collar 0 into which the wheel axle (Z is suitably secured, as in Fig. 1, or these sliding members may be set in a frame (2 as in 5 into which a boss or collar is slidably adjustable in a guide 9 therein and set by bolts h, to adjust the tension on a chain drive, for example. i
The sliding members slide through fixed points 7' and is which are equidistant or substantially so from the axis of the pulley z or like driving means. The said fixed points j and 7: are comprised of trunnions Z rotatably mounted in bearings r and s in arms m and a respectively, in a frame piece '0 integral with or fitted at the intersection of the frame back forks p and Q so that the said trunnions may turn in accordance with the sliding movement of the arms through the fixed points. The bearing 8 is slidably adjustable on the arm n to adjust and set the fixed point equidistant from the pulley z or like driving means, and the trunnions Z are laterally adjustable in the bearings r and '8 by screws 2, and u to compensate for any small errors in assembling, which screws after being set to the desired position are secured against accidental unscrewing by a screw '0 on the threads.
A helical spring to is applied between the top arm m and the boss or collar 0 of the frame ,6, and preferably a second helical spring may also be fitted below the lower arm 12 held by a pin or the like, at the end of the sliding member 6 for excessive road shocks. Both these springs may be inclosed in a casing (not shown), and I may also use lamina-ted springs instead or in conjunction with the device hereinbefore described.
Laminated springs may also be fitted to the underneath side of the rear fork members to yieldingly resist the upward movement of the arm 6 and the wheel axle.
The carrier back stay 11 is fixed at the ex tremity of the upper projecting arm m and is thus sprung equally With the frame, while I the stand 12 may be secured in the usual way to the extremity of the projecting arm a.
In the embodiment shown in Figs. 1 and 5 the fixed points 13 and 14L are mounted in independent lugs 15 and 16 respectively joined by a bar or tubular member 17, while said lugs are brazed or otherwise secured on chain stays 18 and 19, and the lug 15 is further bolted or otherwise secured to the back stay 20. g
A suitable casting 23 incloses the spring 21 and a dust cover 22 is mounted on the top of lug 15' inside which cover will travel the sliding member a.
I claim V 1. Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like, consisting in mounting the wheel at the angle of pairs of straight sliding meming wheel of a cycle, motor cycle, cycle car,
or the like, consisting in a boss or the like for receiving a wheel axle arranged at the angle of intersection of two straight sliding members, which members slide through rotatable bearings at fixed points in a frame member equidistant from the axis of the driving means, and a spring between the said boss and the frame member adjacent one of the said bearings.
4. Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like, comprising a frame member at each side of the wheel carrying pivotal bearings at fixed points equidistant from the axis of the driving means, a pair of straight members in each frame member set at an angle to each other and sliding in said bearings, a connection for the wheel axle at the point of intersection of the pair of straight members, and a spring to resist the movement of the wheel and the consequent sliding of said straight members in said bearings.
5. Improved means for springing the driving wheel of a cycle, motor cycle, cycle car, or the like, comprising a frame member at each side of the wheel, said frame member carrying pivotal bearings at points fixed equidistant from the axis of the driving means, a pair of straightmembers set at an angle to eachother' and sliding in the said bearings on each side of the wheel on said frame members, a connection for the wheel axle at the point of intersection of the pair of straight members, and the application of a spring to resist the movement of the wheel and the consequent sliding of said members in said bearings.
6. The improved means for springing the driving wheel of a cycle, motor cycle, cycle car or the like, as in claim 5 with adjustment means for the said bearings in the frame member substantially asset forth with reference to the drawings.
ERNEST FREDERICK HARMER, F. S; l.
US309094A 1919-07-07 1919-07-07 Method and means of springing the driving-wheels of cycles, motorcycles, cycle-cars,or the like Expired - Lifetime US1361382A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500659A (en) * 1945-05-08 1950-03-14 Stanley J Burwell Motor scooter frame and rear wheel suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500659A (en) * 1945-05-08 1950-03-14 Stanley J Burwell Motor scooter frame and rear wheel suspension

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