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 numberUS937614 A
Publication typeGrant
Publication dateOct 19, 1909
Filing dateMar 5, 1909
Priority dateMar 5, 1909
Publication numberUS 937614 A, US 937614A, US-A-937614, US937614 A, US937614A
InventorsErnst Lampel
Original AssigneeErnst Lampel
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Spring-fork for bicycles.
US 937614 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




937,614. Patnted ()qt.19,1909

Pl/Ma. w G m/Wm;




Application filed March 5, 1909.

To all whom it may concern:

Be it known that I, ERNST LAMIEL, a subject of the German Emperor, residing at 67 l/Viirzburgerstrasse, in the city of Dresden, Saxony, Germany, have invented a new and useful Improvement in Spring-Forks for Bicycles, of which the following is a specification.

The present invention relates to spring forks for bicycles and consists in providing the hollow ends of the fork arms with slidable, spring actuated cores adapted to receive the wheel axle; the different parts being arranged so as not to impair the stability of the machine, nor to materially alter its appearance or increase its weight.

In the annexed drawings the invention is illustrated, Figure 1 representing a partial section through one leg of the rear fork, Fig. 2, a section along line A-B of Fig. 1, Fig. 3, a partial section through one leg of the front fork, and Fig. 4:, a section along line CD of Fig. 3.

The invention consists in the arrangement of so-called buffer springs, i. 6., spirally wound blade springs, on the forks immediately above the wheel axles.

As shown in the drawings, the ends of the forks a are provided with slidable cores I) having slots 0 in which bolts and c, secured to the fork, are guided. By this arrange- Specifioation of Letters Patent.

Patented Oct. 19, 1909.

SerialNo. 481,547.

ment, which serves to limit the play of the springs, the stability of the machine remains unimpaired. The springs h are placed between the wheel axle at g and the ends of the fork a and abut with their upper, broad, ends against caps z and with their lower ends against washers 7c. The tension of the springs should be regulated so that said springs only commence to play under the ordinary load of the machine.

I claim:

A spring fork for bicycles comprising, in combination with an ordinary fork with hollow arms, slidable cores fitted in the ends of said arms, projecting through the latter, being adapted to receive the wheel axle at their lower ends and being provided on the part which is interior of the fork arm with elongated slots, bolts fitted in said slots and secured to the fork arms so as to limit the movements of the cores in the latter, and spirally wound blade springs arranged 011 the projecting ends of the cores between caps and washers and abutting by means of the former against the ends of the fork arms and by means of the latter against the wheel axle, substantially as set forth.


Witnesses HARRY A. MCBRIDE, J. KANs.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6893037 *Feb 26, 2002May 17, 2005Mario GalassoSuspension assembly for a vehicle
US7185905 *May 13, 2005Mar 6, 2007Motoczysz LlcFront suspension for motorcycle
US7207585 *Feb 2, 2005Apr 24, 2007Motoczysz LlcFront suspension for motorcycle
US7380808 *Dec 3, 2004Jun 3, 2008Specialized Bicycle Components, Inc.Bicycle wheel support with vibration isolation
US8833784 *Jan 19, 2012Sep 16, 2014Trek Bicycle CorporationBicycle fork assembly
US20130187357 *Jan 19, 2012Jul 25, 2013Steven MoechnigBicycle Fork Assembly
Cooperative ClassificationB62K25/08