US968501A - Lift. - Google Patents

Description

G. P. TURNER. LIFT.

APPLIOATION'FILED JULY 28, w09.

Patented Aug. 23, 1910.

z SHEETS-SHEEP 1.

C. P. TURNER.

LIFT.

APPLICATION FILED JULY 2s, 1909. 968,501. Patented Aug.23, 1910.

2 SHEETS-SHEET z.

I l .J l l I I t V'F-f-V- .UNITED STATES 'PArENrgoFFIon CHARLES F.' TURNER, OF BOISE, IDAHO, ASSIGNOR 0F ONE-FIFTH T EMEDY WIL- LIAMS, ONE-FIFTH T HARRY LE ROY, AN-D ONE-FIFTH TO EDWARD J. DOCKERY, ALL OF BOISE, IDAHO. LII-T 968,501. y Specication @Letters Patent Patented Aug. 23, 1910.

J `Application led July 28, 1909. Serial No. 510,041.

To all whom itwmay concern: tion is illustrated in the accompanying `Be it known that I, CHARLES F. TURNER, drawings, wherein? p a citizen of the United States, residing at Figure 1 is a plan view ofthe improved 55 Boise, in the county of Ada and State of rlift, a portion of the upper platform mem- Idaho, have invented new and useful Imb er` being broken away. Fig. 2 is a ver- ,provements in Lifts, of which the followtlcal section taken on the line 2-2 of Fig. ing is a specification. 1. Fig'. 3 is a plan view of a modified form The present invention is an improvement 0f platform. Fig. 4 is a vertical section 60 in lifts, and it resides primarily in the protaken on the lined- 4 of Fig. 3.

duction of an extremely simple and power- Reference being had to said`r drawings,

ful apparatus of the character specified, exand to the characters marked thereon, A despressly designed -for use infloading and-unignates in a' general'manner thev platform `loading baggage and freight, and constructofthe apparatus, B the hoisting mechanism 65 ed in such a manner as to permit the articles connected therewith, C the station platform,

to be loaded upon the platform of the lift and D the track. 4 v J andU thence transferred to the car, or vice The mechanism B i's arranged within a versa, without necessitating their being cylindrical pit 5 located' a convenient dismanually raised or, lowered during lsuch tance from the track and havinga diameter 70 transference, thereby elfecting as results an substantially equal to that of platform-A.-

enormous saving of/time and expense, and, This mechanism comprises essentially a pisla` reduction of the ordinary wear and tear ton 6,` and series of levers 7 and cablesS. upon the articles to a minimum. Piston 6 works within an upright cylinder lThe invention more articularly compre- 9 arranged centrally of the plt and mounted 75 hendsthe ap lication of) the lifting pressure, .upon the floor thereof, its' operation being both central y of the platform of the liftcontrolled hydraulically by means of comand to the edges thereof, in contradistincwpressed air, steam, or other `fluid admitted tion to the ordinary type of lift wherein the into the cylinder from any suitable source application of the pressure is limited to the of supply, through a pipe 10 provided with 80 center only` of the platform." In the latter a valve 11.

construction, experience has proven that un- The free upper end of the piston'rod 12 I less the load is positioned exactly centrally carriesy a pair of spiders 13 and 14 arranged x of the platform, or in other words, in the one above the other. T hese spiders support;` rligne Vof the `direction of the pressure, the respectively, the upper and lower members-185 platform will tiltslightly, thereby causing L5 and 16 of platform A-,.the lower spider the piston to which it is connected to. bind restingupon ashoulder formed upon the rod Ato a greater or less extent in the cylinder while the undervface of the upper I'spider is.

head. l n provided with-a bearing in which the upper The invention, therefore, resides to an ex- ,terminal of the rod loosely fits. 90 tremely material extent in the employment Spider 14 has connected thereto the upper 4.0 of means for effecting the transmlsslon lof ends of the cables 8, four of which are .em-

y the centrally lapplied pressure to the edges ployed in the present construction, `the -of the platform so as to overcome such despider )having the same number of arms.

fect. The ca rles are led downwardly and beneath 95 Finally, the invention resides in the para series of pulleys 17 mounted upon the pit ticular construction of the platform, which floor, and thence upwardly and oyer pulleys latter comprises relatively stationary and 18 carried by thelevers at their lnner ends. rotatable members, the provision of the last- Finally, the cables are again led downmentioned member, enabling the various Wardly and are secured at their ends rlngs 100 articles of bag age (xr-freight to be grouped 19 secured to the pit Hoor. At their outer thereon accordingto the several stations ends, the-1everswh1ch correspond 1n number for which they are destined. to the cables, are connected to depending 'The preferred embodiment of the invenhangers 20 pivoted to the lower platform member 16 adjacent the peripheral edge of the latter. The levers themselves are supported upon standards 21 to the upper ends of .which they are pivoted, the pivots being located nearer the .inner than the outer ends of the levers, as shown. This construction, as will be apparent, provides for the applicat-ion of pressure against all portions of the lower platform member, the. pressure applied initially to the central portion thereof being transmitted through the cables to the Ilevers and thence to the edge portion. w

The platform. member in question `is 1n the form of a skeleton framework of metallic I-beams, and is directly fastened to the to the under face of they solid upper plat-l form member are interposed series of antifriction rollers 26 and 27, the rollers of each series being connected together by .a pair of Aspaced annular straps 28disposed upon opposite sides thereof and formed with per-` forations designed to receive the ends of the pins 29 upon which the rollers are mounted. The upper vplatform member is thus enabled to turn freely in either direction upon the rollers and with respect to the piston roda The two platform members are .provided with depending peripheral guard flanges 30 and 3l which extend completely around the edges thereof, the lower guard. having its upper portion offset, as indicated by the' numeral 32, to provide a seatin which the lower portion of the u per guard is received, the outer faces of the guards being thus virtually flush with each other.

The hoist, as already stated, operates in connection with the station platform C, and in its normal or lowered position is iush with said platform, as shown in Figs. 2 and 4, that portion ofthe platform which .directly overhangs the pit being cut away to provide an opening which conforms in shape and dimensions to thoseiof the platform member l5. In its elevated position, the above-mentioned platform member is on a level with the floor of the car, (notr shown). The articles of baggage or .freight may thus be readily. shifted from the floor of the station platform onto the lift platform, when the latter is lowered, and may be transferred from the last-mentioned platform through the car door opening, when said platform is raised, by a single movement. rlhe guards 30 and 3l with which the lift platform is provided vprevent access to the pit when said platform is raised, the

mouth of the pit being closed when the platasesor form in question is 'in its other position. lit

lis not essential, however, that .the lift platform A be circular in shape, since a lift platform of vthe type shown in Figs. 3 and 4 may be made use of. The platform A therein. illustrated is rectangular in shape and its upper member lconsists of a relatively stationary outer-section 33 anda rotatable circular inner section 34, the 'two sections occupying a common plane. llihe section .'33 serves the same purpose as the station platform C, namely,- to support the Workman Who shifts the articles of freight or baggage from the vrotatable section 34 into the car, or vice versa. In this form of .the invention, the lift platform is provided With a single guard 35.

Owing to the fact that the lift platform in both instances'includes a rotatable section or member, it will beapparent that in case a considerable quantity of freight or baggage vis to be` transferred to the car and .to be delivered at various stations along the `group for the station nearest that station,

and so on, until the group for-the nearest station is reached, this group being transferred last to the car and placed nearest the door. The Whole process of unloading the articles from the car will then be expedited,

since there vwill be no occasion to hunt for the particular articles to be delivered at a station when lthat Vstation'is reached. Moreover, itis notnecessary ,that an article to be transferred to the station platform be placed exactly on the'center Vof the lift plat- `form, since' the eqnal distribution of the pressure applied against the latter enables.

the same to be raised with equal facility" irrespective of" the' ppsition of the articles with reference" thereto, '.andthe platform when raised may be readily turned in the n proper direction to bring the articlein line with the `car door. i

The' spiders 13 and lllare carried bythe piston rod, as already stated, .and since the upper ends of the cables 8 which operate the levers 7 during the upward movement of the platform are directly secured to the lower spider, it is obvious that the levers may be correctly regarded as operatively connected. with the piston. rllhis expression is employed in theappended claims.

lVhat is claimed is:

'1. In a lift, the combination, with a platform; of a power device having means to sustain and put pressure on tlie'platfoim at a xed point; and additional devices for distribiiting the force of the power device pressure to v evenly throughout the platform.

2. Ina lift, the combination, with a platform; of ineans'for applying pressure centrally of the platform to raise the saine;

yand positive means for transmitting such tlie edge portion of 'the platform. t u

- 3. .In a lift, vthe combination, with a plate forni';of a power device for applying' pres-4 sure centrally of the platfornnto raise the same; anda pluralityl of devices operatively connected with' the power devicefor `-eX- -erting pressure'against the edge portion \of the platform.

4. In a lift, the combination with a vertically-movable platform, and a motor for ap. plying pressure centrally therea'gainst; of a. pluralityofl devices.operatively^ connected with the motor for transmitting such pressureto the edge portion of the platform.

5. In a lift, the combination with afinidactuated piston,and a spider carried by the piston rod; of a platformmounted upon the spider; a series -of lifting devices grouped around tliepiston; connections between said k platform; of a series of pivotallymounted lifting levers grouped around the motor andlocated beneath the edge portion of theJ platform; connections between .the outer ends of the levers and the edge portion of said platform; and cable connections between ythe inner ends of thejleversvv and the motor..

7. In a lift, a vertically-movable' plati, i i

form comprising relatively fixed and movable sections: arranged in the same plane,

8. In a lift, a vertically-movable platform comprising relatively fixed and rotatable sections arranged in the same plane.

9. vin a lift, the combination, with a; plat-- form; of a motor capable of llifting the platform; and a series of lifting devices arrangedb'beneaththe edge portion ofthe platform and connected with said portion and withgthe motor, for control wholly by the latter during its operation.

l0. Inl a lift, thecombination, with a'platform; of a motor capable of liftingth'e platform; and aseries of pivotally-niounted lift-- ing levers arranged -beneath the edg'e portion of the platform and having'their outer' vends' connected with said inner ends with the motor, `or control wholly ortion and their by the `latter during its operation.

i 11. In a lift, the combination, with a platform; of a iuidfactuated piston; and a series of lifting devices arranged beneath the edge port-ion of the platform and connected with said portion and .with the piston, for control wholly by thelatter .during its movementsf u A' 12. iIn a`lift,qt-he combination, ,with a platform 5f4 ofa motor capable of lifting tlie platform; and `a series of pivotally mounted liftingv levers arranged beneath gsaid platform a and eonnected\with'the same and with said motor, forv control whollyby the latter during its operation-.1 y l In' testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.l

' Witnesses .f

' FRAM; MARTIN,-

"Tf f .'THoMAs L.:MART1'N.

- #CHARLsRTUnNERQ Y'

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