Letters Patent is: 1. An exercising machih6 -of the character described comp - rising a rigid frame I structure inc di g a pair of 20 lat6raNy spaced, coexteifsive o.@posite side members and means joining -said memhers rigidly in parallel vertical planes; each side m--mber haviii.6 substantially horizontally extending upper and lower leg portions, I a seat mouiiting lever dis@osed between said spaced side members and 25 pivotaby supported at- its lower end, for oscillatibn in a plane pa-rallel th.-reto, from the forward portions of the lower@ leg oortions 6f said frame members; said leve-v extended rdarwardly and upwardly to a levdl@ above said frame stiucture, a seat stfucture fixed riaidly on the up30 per@end-p6rtion of said seat mounting lever, a handle lever located between the forward end _porti6ns 6f said side members and pivoted thereto, between its ends,:@for : oscillati-on---substantially in the sar@e )lane 6f m I ovement its of said sezit-m6unting lever-, said h@ndle levet havin.- 36 upp-er--end extended substantially :above said seat structure, a,link,pivotally connected at one end-to the lower end portion of said handle lever and pivotally connected at its -other end to the seat structure whereby, osciuation. of the handle lever effects a liftink and @ lowering action of said seat,structure, and, a resistance means interposed b.- tween a@d coiinec' ed to the handle lever and the rear erd portion of said frame structlre and operable to yi.-Idin.-ly resist, to various anounts, the oscihating act@ons of the handle lever and -se-at structure. The device of claim 1 includinr a crank shaft' supported for oscillation- in a- vertical plan-, and depending fiom the frame structute forwardly,-of,the h@aridle lev6t.s-@id s' i.,ft haviniz foot @edals at its lower.-end adapted to accommodate the feet of a person sitting gn the seat structure and holding the handle lever, and..a link pperati,,,ely conn.-cting the crazik -shaft viith the 16wer end 6f the handle_I-Ver toprovide-f6r thel.coaction of the hands aia fee, of the user in ,he actuation of the seat supportin.- levcr. 3. The devic,- of claim 2 wherein said resistance nieans comprises a double actiii. air cylinder, con e6ted withthe frame structure,. a pi containe ciprocal action and a rod connectin@ the piston qn-d handle lever-to niove the pistoji in a6--ordince th e 6scilN@, til latiniz@actidn the handle lener. said cylinder being eqiiipped with a passagi@ for the@bypa sing of air@ from one end thereof tolthe other in accordanc6 with piston m6veriients f and A valve associated with sa.id pas-a-e and adjustable to control the flovi of air therethrough to mor6l or less extent, thus to establish the desiri@d to movement of the piston.- References Citp-d in the file. of this patent - U,NITED STATES PATENTS @ I - I - 19 33 916,714 -Burke ------------------ July:4, Stro ach -------------- Jan. 19 1937- 2,068,578 n- I ?1278,591 Sak ------------------- Apr. 7, 1942 2,642,288 Bell --------- ----- -- June 16, 1953

2 2 8 2 5 , 5 6 3 United States PatentOffice P a t e n t e d M a r . 4 , , . , 1 9 . 5 8 . 2i8259563,i EXERCISING'MACHINE 5 IIAM,R.;@Litwton@,-Seatfle, Wash.,.assignor@to Ro-,er's HieaM- Equipmen4.luc -Seattle, Wash., a cbrporati6n of @ Washington@ ApplicationMay-16,1955, S@rialNo. 508,507' 10 3-CWms.. (Cl..272-79.): This inventibn relates to exercising machines and it 15 has reference-more- particularly to an apparatus which tb some extent sihiulates the rowing - machine typp of exerci er in tlfat it is stationary, and. p;rovides f6r the simultaneous exercising of back, leg and larra muscles. Itlis-the principal object-of the,present invention,to 20 pyovide a simpjified. and relatively inexpensive machine of'the above type that affords all of the advanta&es in so fdr as providing for body excrcise is concerned, -now provided.iii machines of more expensive and more elaborate types. More specifically stated, it is the.princi@.al 25 object of the invention to provide an exercising machine of rowing., mach;ne.- type - wherein. the . exercising effort exerted by the arms and legs of the user is applied against a piston that -is - reciprocallyz movabl@ ih- a@n air cylinder and @iba required-.effort -can..be-,varied,- as- desired'.by@z ad- 30 justment of-.an-air-valve- through.-which. the - ait..i!@@.bypass.-d frona--.one,end-of.-the-.cylinder. to@:the oth,-r.. Still further. objects- and-advantages. of the present:,exercising machine reside in the details of construction o its parts; in their combination and in the mode of use 35 of the device, as will hereinafter be funy described. In accomplishing thes-- and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying dravvings, wherein: 40 Fig. I is a side view of the present exercising machine. Fig. 2 is a top or plan view of the same. Fig. 3 is a lon.@itudinal, sectional view of the air cylinder, showing the valved piston and the valve controlled passa,-e through which air is by-passed from one end of 45 the cylinder to the other. Referring more in detail to these drawings: The present machine, in a preferred form of construction, compresses a rigid main frame structure formed of metal tubin- such as aluminum, stainless steel or other 50 suitable mat-,rial. This frame structure comprises paired lona.itudinal elements, each formed from a single length of tubing, bent to U-form to provide an upper leg 10 and a somewhat shorter lower leg 11. These paired elements are disposed in laterally spaced, parallel, vertical 55 planes, as understood by reference to Fig. 1, each being co-extensive with the other, and each with the semi-circularly curved end portion 12, which joins the legs 10 and 11, at the rear end of the machine. .Lhe two fram-- elements above described are joined 60 rigidly in their spaced relationship by a plurality ol' crossbars 15 and, as seen in Fig. 1, they are supported at their rear ends through the mediacy of suction cups 16 affixed thereto; these being adapted to flatly en-age the floor or supporting surface on which the machine rests. It is shown in Fig. 1 that the upper legs 10 of these 65 two frame elements are somewhat longer than the lower legs 11 and that these two joined elements are supported at their formed ends by a pair of legs 20-20. Each leg has a substantiahy vertical portion welded or otherwise 70 permanently joined at its ii-pper end, as at 21 in Fi@-. 1, to the, leg 10 of the correspondin.- lonSitLidinal frame 2@ el6ment. Also- to -this lbg, !He f6r,,vard "end of the - short,-r lbwer 16g-11'@f,theframe ele-ment-is welded;.as-at 22' At their. lower ends, the legs 20@ have IateraR@,- and'outwardl@ directed'f6et 25, and at-the end@.-of@these are@ st,.rfdce en.- aging suction. cup@. 26@'which,engAgp. the suppprtin.- surface. ne frame structlire, as thus. fbrmed 'and suppprted,,is r@gid -and durable and 'has no tendency. in the use. of 'thi-machine,. to tip_ sidewise or to creep. iii a long-.tudinal direction. Mounted ' at the, forward ends - of @ th6 coextension, Idg@ l@ O' of the paired ' frame elements - are transversely, andhorizontally, aligned - bearing@ 30-30 in which a crank shaft,31 is,mounted,f6r oscillation. This crank,sb@aft is formed at its opposite ends with dbpendih- egs, @32-32of equal'16ngl@h and these are eqi@ipp-pd: at their, lower ends with pedals 33-@,-33 in transverse - alignment. As thus mounted,,the crank shaft -is addpted f6r fbrward'and rearward'oscilfdti6n, as-indicated'by the arrow adjacent thereto in Fig. 1-. PiVotally_ mounted,_by_ a bolt 35'-that extends between the forward' end' i@rtions of - the leg5 10 --10' of ' the ppired' frames, fbr- f6rward and rearward. oscillation is a lever, 3',',".Cqpipppd at its,upper end witlf laterall@ di-' rected Ifandl@s 39.- Th@.Eolt 35 is Ibcated somewhat rearward'of 'the Vearing 3,0"but f6rward' of 20@.- It has al,lower cnd-p-prtion 3'3,t extend@d b@low the pivot bolt 35' , which i@. p@Votallk connected at its 16wer end 'by p?Lited link 4!L-411 'witlf.a,cross-rod:42 that extend@ betvvee-n t!7;e d6ppndiiig,lt.-s 3r2-:-32-of the crank,' shaft 31.. Disppsed'ab@ov--, the le-_2 10- 10 @ of ' th@-. paired " mai -n ftame sectibns, i@ a seat, 501 on, whiclf tife user, of @ thi-'t machirie,. can - sl I astfide, the ffame, with his two f6et rested uppn,tlie pedals 33 --3311, and hi& two hands grasp,iiig the corresponding handl6 members 39: The seat 50 is supported by a pair of rods 52-52, with upper ends fixed to the under side and rear end portion of the seat, and extended forwardly and downwardly therefrom, and pivotally fixed at their lower ends to the forward ends of the legs 11 by bolts 54. A seat bracing and supporting st.-ut 55 extends from the under sid-@ and forward end portion of the seat downwardly to the rods 52 and is fixed thereto by a bolt 57 passed through the parts. Extended betw.-en the upper end portion of strut 55 and lower end portions of lever 38 is a link 58 with its ends pivotauy connected to these parts, respectively, by bolts 59 and 60. By reason of this connection, forward and rear-ward osciliation of the lever 38 will effi--ct a corresponding raising and lowering of the seat as indicated by the dotted line showing of these parts in Fi.-. 1. It is to be understood that, in use of the exercising device, the user, sitting on seat, with his feet on the pedals and hands gripping the handles 39, pulls rearward on the lever 38 and pushes forwardly on the pedals, to Iiit his wei_eht as supported on the seat. H,- then reverses the operation by pushing the handle bar forward, and allowing this wei,@ht on the seat to act through the described linkage to return the pedals to retract.d position. In order that the exercising effort may be made more or less, as desired, I have mounted an air cylinder 65 longitudinally within the main frame srtucture; this being pivotally fixed at its rear end by a pivot bolt 66 that extends between the ctirved rear end portions 12 of the paired frame members. Contained in the air cylinder 65 is a piston 68 with a piston rod 69 extended from its forward end, slidably through the cylinder head and pivotafly connected at its forward end to the lower end of lever 33 by a pivot bolt 70 which also connects linl-,s 41 with the lever. Thus, with the oscillation of lever 38 the piston 68 will be reciprocally moved in the cylinder, 65, and the phys;cal effort reoiiired to move it can bi@

varied in accordance -with the by-passing of air from one end of the cylinder to the o-ther. To permit such by-passin.- of air, the piston is formed -with two air passages 71-71 as shown in Fi,-.:3; each being equipped with a baH -check valve, 74 and these being 5 faced in opposite directiofis. In , addition @ to these two piston passlages which are of fixed area, there i also a by-pass tubi@ 75 leading from one c@linder head to the. otherl- exterior of the cylindi@r. This tubeconnects at its ends throu. ,h passages 76 and 77 formed in-the heads, 10 with the opposite ends of tlfe cylinder. A-iialve st-,Pa 80 is threaded iiito hee@d- and into the-passa:ge .76 and by its adjustment will vaiy the pa sage area and fl6-w of air therethrough a@cordingly, thus to require mbr6- br le s ph@si@al effort on the part of the -user in O-Peiati6n 6f the 15 machine. Having thus, described my inv6ntion, @,v'iiat I claim is new therein- and desire to secure by-