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Publication numberUS2042764 A
Publication typeGrant
Publication dateJun 2, 1936
Filing dateDec 3, 1934
Priority dateDec 3, 1934
Publication numberUS 2042764 A, US 2042764A, US-A-2042764, US2042764 A, US2042764A
InventorsBirch Erastus Franklin
Original AssigneeBirch Erastus Franklin
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2042764 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

E. F. BIRCH EXERCI SER Filed Dec 5 1934 4 INVENTOR v l BY l A f Y' I ATTORNEYS novel features which Patented June 2, 1936 UNITED STATES PATENT oTFleE 1 Claim.

This invention relates to exercising apparatus for developing and strengthening the human body and its object is to provide an apparatus which will occupy a small floor space and will furnish exercise for all parts of the body. It is also an object of the invention to provide an apparatus which will furnish resistance to the progress of the person exercising and also to provide means whereby the resistance offered may be easily adjusted to the age or strength of the user. These objects and other objects which will appear as the description proceeds .are attained in such an apparatus as is illustrated in the accompanying drawing-and the invention consists in certain will be particularly defined in the appended claim.

In the drawing:

Figure 1 is a front elevation of the exercising apparatus.

Figure 2 is a side elevation.

Figure 3 is a vertical section through the governing mechanism, on a larger scale. I

Figure 4 is a section on the line 4 4 of Figure 3.

Figure 5 is a section on the line 5 5 of Figure 3.

The frame of the apparatus comprises two uprights or standards I to-the lower ends of which feet 2 are coupled by fittings 3. A bracing cross bar 4 is secured in and extends between the f1ttings and longitudinal side bars 5 are also secured to said ttings, said side bars having their ends more remote from the standards secured in ttings 6 from which depend feet l, similar to the feet 2. A cross bar 8 connects the standards at an intermediate point of their height, While a third cross bar 9 connects their upper ends and another cross bar I Il is secured in and extends between fittings II on the standards near but below their upper ends. Braces I 2 are secured to and extend between the fittings 6 and II, a very strong and rigid frame being thus produced, and the arrangement is such that the braces I 2 are at the outer sides of the standards.

Sprockets I3 are mounted on the cross rod 9 at the upper ends of the standards; similar sprockets I4 are mounted on the cross rod 4 at the lower ends of the standards, and a third set of sprockets I5 are mounted on a cross rod carried by and extended between ttings I6 on the side bars 5. Parallel endless chains I1 are trained around the sprockets and are connected at intervals by rungs I8 so that, in effect, a traveling ladder is produced. The sprockets I4 are secured to the rod and said rod is journaled in the fittings 3 and extends laterally beyond one of said fittings but the other sprockets may be rotatable on stationary rods or fixed on rotatable rods as preferred.

The person using the apparatus will endeavor to climb to the top of the ladder but his weight will cause the chains to move downwardly and his eiforts to progress will develop agility and strengthen his muscles, especially the muscles of the legs, arms and chest.

The apparatus includes means for governing the movement of the ladder and regulating the same according to the weight and condition of the user. The rod or shaft 4 is extended into and journaled in the sides of a casing I9 which is arranged at the side of the frame and is lled with oil or other non-compressible fluid. Within the casing I9, a spiral or worm gear 20 is secured on the shaft 4 and meshes with a worm 2| on a vertical shaft 22, the upper end of which is journaled in and extends through a spider 23 in the top of the casing, a fly Wheel 24 being secured on the shaft above the spider and a cover 25 being secured on the casing to house the ily wheel. The lower end of the shaft 22 extends into a pump casing 26 on the floor of the casing I9 and is jcurnaled in a thrust bearing 2l on top of the pump casing. Within the pump casing, the shaft is connected to a rotary impeller consisting of a disk 28 disposed eccentrically in the casing and having radial recesses or slots 29 in which are slidably mounted blades 30, expansion springs 3| holding the outer ends of the blades against the wall of the casing, as show-n in Figure 5. An inlet port 32 admits oil from the oil chamber or casing I9 into the pump or impeller chamber from which it is driven through the outlet port 33 into 'a pipe 34 rising in the oil casing. The upper end of the tube 34 is connected to a valve casing 35 Within which is a cut-o" valve of anyV approved form having its stem 36 extending through the casing I9 and equipped with a handle 3l at the exterior of said casing. By properly setting the valve, the volume or speed by which the oil is permitted to return to the main body of oil may be nicely regulated.

When a person is on the ladder, his weight will cause it to move downwardly as has been stated. The movement of the ladder will rotate the shaft 4 and the rotation will be transmitted through the gearing in the oil casing to actuate the pump and thereby set up a circulation of the oil, the ily wheel imparting steadiness to the operation. Obviously, if the governing valve be wide open the circulation of the oil will be more free than if the valve be nearly closed, so by adjusting the valve the travel of the ladder will be regulated to obtain the best results With any individual user.

Having described my invention, what I claim In an exerciser, spaced standards, a. cross bar connecting the lower ends of the standards, horizontal side bars extending from the lower ends of the standards, a cross bar connecting the side bars, supporting feet for the Standards and for the side bars, inclined braces connecting the upper ends of the standards to the outer ends of the side bars, a cross bar connecting the upper ends of the standards, spaced sprockets on each of the said cross bars, parallel endless chains trained around the sprockets, ladder rungs connecting the chains at intervals, and means for controlling movement of the chains as the Weight of the user encounters the ladder rungs.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2725231 *Jun 1, 1953Nov 29, 1955John L PowersRowing machine
US3497215 *Apr 3, 1967Feb 24, 1970Univ Johns HopkinsExercise escalator
US3592466 *Jan 21, 1969Jul 13, 1971Billie D ParsonsRevolving step exerciser with adjustable slope
US4171802 *Dec 12, 1977Oct 23, 1979Stoecker Carl HHydraulic torque reaction wrist and arm exerciser
US4555108 *Mar 12, 1984Nov 26, 1985Monteiro Frank GExercising and physical-conditioning apparatus
US4726581 *Jul 3, 1986Feb 23, 1988Chang Shao YingExercise stair device
US4822029 *Oct 8, 1987Apr 18, 1989Sarno Gregory GExerciser simulator having a frame rotatably mounted on a fulcrum point
US4848737 *Oct 1, 1987Jul 18, 1989Ehrenfield Ted RCardiovascular exercise ladder
US4884800 *May 8, 1989Dec 5, 1989Duke John HRowing machine
US5039087 *May 11, 1990Aug 13, 1991Kuo Hai PinPower stairclimber
US5112043 *Oct 3, 1990May 12, 1992Gilfillian Jr Henry JPhysical therapy apparatus
US5145475 *Apr 25, 1991Sep 8, 1992P And L PartnershipExerciser
US7195582 *Apr 21, 2005Mar 27, 2007Yu Feng WuRock climbing apparatus
US9017224Mar 5, 2013Apr 28, 2015Paul E. SingleyLadder exerciser
US20040229732 *May 16, 2003Nov 18, 2004Cheng-Liang WangAdjustable rock climbing device
US20060240949 *Apr 21, 2005Oct 26, 2006Wu Yu FRock climbing apparatus
U.S. Classification482/52, 482/112
International ClassificationA63B22/04, A63B23/035, A63B21/008
Cooperative ClassificationA63B21/0081, A63B22/04, A63B22/001
European ClassificationA63B22/00A6, A63B22/04