US 1459722 A
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"Time 26, 1.923. f
R. A. ERsLEv AUTOMATIC CASE LIFT Filed Sept. 30 1921 2 Sheets-Sheet l June 26, 1923. ll,459,722
' R. A. ERSLEV AUTOMATIC CASE LIFT Filed Sept. 30 1921 2 Sheets-Sheet 2 Jaa? n A5501' y mmm Patented .lune 26, i923.
ROLF GE ERSLEV, OF COFENHAGEN-VALBY, DENMARK.
AUTOMATIC CASE LIFT.
Application led September 30, 1921. Serial No. 504,4?1.
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Be it known that I, ROLF AAGE ERsLEv, a subject of the Kingdom of Denmark, residing at Copenhagen-Valby, Denmark, have invented certain new and useful Improvements in Automatic Case Lifts (for which I have filed applications in Denmark, No. 2900, on Sept. 14, 1920; in Germany, No. 25,690, on Sept. 20, 1920; in Sweden, No. 4706, on Sept. 21, 1920), of which the following is a specification.
The invention hasffor its object an automatic case-lift provided with lift-chairs or platforms suspended in two endless chains l5 which by meansgof chain wheels are moved with always the same speed. The chief object of the invention is to construct the caselift so, that the cases automatically arrive into the lift-chairs without shocks and at the place of discharge are automatically removed without shocks, so that also brittle goods for instance bottles may be automatically transported from place to place.
This is obtained -by means of sliders,
which directly operated from the shafts of the chain-wheels are horizontallyv reciprocated thereby carrying the cases into or withdrawing them from the lift-chairs. A rocking-member directly operated from the chain-wheels is also provided. Said rocking-member has for its object to prevent untimely arrival of the cases to the lift-chairs and in the right moment to tilt the cases so much that a projection or nose on the slider` can catch the cases.
A constructional form of the invention is illustrated on the drawing: j
Figure 1 is a side viewof the lift.
Figure 2 shows in a larger scale a plan view of the same,
Figures 3 and 4 are side views showing parts of the case supplying means in the two different positions.
j Chain-wheels K which revolve with always the same speed move two endless chains T in which the lift-chairs or platforms S1, S2. are suspended.
Each of the shafts V of the chain-Wheels is provided with an arm or lever L, which,
by means of a connecting rod M, is connected to a slider N guided by a guide rod W, along which the slider reciprocates. The slider N is provided with a projection or nose O, which at the place of supply draws the cases into the lift-chairs and at the place of discharge carries the cas'esout of the liftchairs. y f v The cases U, U1, U2, U3 are ordinarily carried to and from the life over roller-tracks E or the like. In continuance of the rollere0 tracks E grate-shaped bridges Z and Y are provided respectively at the entrance and delivery-ends of the lift. The nose O of the lower slider N carries the cases on the lower brid e Z from which they by the lift-chairs e5 S1, 2 are lifted to and placed on the upper bridge Y where they by the nose 0 of the upper slider N are carried to the upper roller-track E.
On the lower chain-wheel-shaft Y a cam 7o A is fixed, which co-acts with a roller in the end of a double-armed lever B pivoted at C the other end of which is connected to a pair of parallel rocking levers H (Fig. 2) pivoted at G by means of linksD. Said pair of levers forms a rocking-member. rllhe inner end of each of the levers H is provided with a stopping nose F by which the cases are caught or an untimely arrival of the cases to the lift-chairs is pref vented when said noses `are in the position shown in Figure 3.
The distance between the lift-chairs S1, S2 suspended in the chains T is similar to the circuit of each of the chain wheels K. Of course the sliders N will make a full reciprocating stroke for each arrival of a lift-chair to the bridges Z and Y, so that the noses O of the sliders N will always be in catching position, 'when the lift-chairs pass the bridges Z and Y.
The described case-lift operates as follows:
The cases U1, U2, U3 are placed upon the lower roller-track E from which they are successivel carried on the lower bridge Z by the nose S of the lower slider N, which slides over the upper side of the case and engages the r'ear edge of said case see Fig. 4) when the case is tilted by the rocking-member H, which is simultaneously rocked by the cam A to such a position that the noses F are lowered and allow the foremost case U1 to be drawn 0n the bridge Z when the slider Nmakes its return-stroke (see Fig. 1). Simultaneously the .rear edges of the rocking-member H prevent the advance of the following cases, so that the next case U2 first can be pushed `forward to the operating eld of the slider-nose O when the rocking member H is again brought in the position the bridge Z and carry them to the bridge Y from which they are carried on the upper track E by the upper slider N.
The described case-lift is only to be. considered 'as an example as the details of it may be varied in different ways. For instance a greater number of tracks E may be provided, one in each Hoor, which however only can be used alternatively.
By the described case-lift the following essential advantages are obtained. The directly operated slider prevents the casesv from being supplied to the lift at wrong times and also prevents- .cases from being supplied in distorted position or turned over and thereby disturb the lift. Further the rocking member prevents untimely supply of the cases and lifts their rear end, so that thefslider-nose can directly catch the cases.
By the improved means described the one or two workmen, who by the lmown lifts are necessary for control, can be dispensed with.
1. An automatic case-lift including horizontal shafts carrying chain-wheels, endless chains passed around said wheels, lift-chairs suspended'insaid chains, horizontal tracks to and from the case-lift, horizontal reciproeating sliders operated by said chain-wheels and rovided with noses for engaging cases, a roc ing-member for the tilting of the cases directly operated by the chain-wheel shaft in -front of the entrance-track, and stoppingnoses on said rocking-member; substantially as and for the purpose specified.
2. An automatic case-lift including horiy arriving cases and to stop `the followingk cases, and stopping-noses on said rockingmember; substantially as and for .the purpose specified.
3. An automatic case-lift including horizontal shafts, chain-wheels fixed to said shafts, endless chains passed around said wheels, lift-chairs suspended in said chains with intervals equal the circuit of each chain-wheel, horizontal tracks to and from the case-lift, horizontal reciprocating sliders operated by said chain-wheels Ito engage cases, a rocking-member, and means for operating said rocking-member to tilt .the foremost of the arriving cases and to stop the following; substantially as and for the purpose specified. i
In testimony whereof I aix m si n A, ROLF AAGZE ature. RS EV. Y