US1246371A - Press. - Google Patents

Description

L YOUNG.

' PRESS.

APPLICATION FILED NOV. 29. ISI-5.

Pante Nwa 13, 191?.

2 SHEETS-SHEET 1A Suomen,

J. YOUNG.

PRESS.

APPLICATlON FILED NOV. 29,1915.

1,246,371. v Patented Nov. 13, 1917.

2 SHEETS-SHEET 2.

gf" mezw UNITED sra'rns Partnr ornron.

JOHN YOUNG, OF CHILLICOTHE, OHIO.

PRESS.

Application filed November 29, 1915.

To all whom t may concern:

Be it known that l, JOHN' YOUNG, a citizen of the United States, residing at Chillicothe, in the county of Ross and State of Ohio, have invented certain new and useful Improvements in Presses, of which the following is a specification.

My invention relates to presses of thetype designed for use in obtaining unusuallyv heavy pressures as are used, for instance, in forming water marks in high lgrade writing paper. In this connection, my invention con# templates the provision of-a press structure wherein a plurality of speeds may be had for reciprocating the plunger or press head, the first of these speeds being somewhat rapid and the last very slow, but exceedingly powerful.

In this connection, one of the objects of my invention resides in the provision of a plurality of screws upon the plunger or press head, these screws being operated by and having threaded connection with a suitable gear arrangement. It is valso my object to Provide these screws `with right and left hand threads, each screw carrying a suitable gear and a driving gear arranged to mesh with the gears on each set of right and left hand screws.

A further object of my invention resides in providing an eXtra weight structure arranged to come in opposition to the weight of the press head and its actuating mechanism to counterbalance the same. This structure is provided to more readily facilitate the movement of the press head and its com plemental structure from a lowered to an elevated position.

The preferred embodiment of my Vinvention is shown in the accompanying sheets of drawings, in which similar characters of reference designate corresponding parts, and in which:

Figure l is a side elevation of my press,

Fig. 2 is an end elevation looking toward the left in Fig. 1,

Fig. 3 is an end elevationflooking toward the right of Fig. 1,

Fig. et is a top plan view of thestructures shown in Figs. 1, 2 and 3,

Fig. 5 is a transverse vertical section taken on line 5 5 of Fig. 1 and looking in the direction of the arrows,

Fig. 6 is a top plan view ofthe plunger or press head mechanism shown removed from the remaining structure,

Specification of`Lette1s Patent.

Patented Nov. 13, 191 *7.

Serial No. 63,930.

Fig. 7 is a section of one side of my press and taken on line 7 7 of Fig. 5, and,

Fig. 8 is a section, partially broken away,

taken on line 8-8 of Figat').

1n the drawings, there is shown a generalV framework as comprising upstanding I- beams 1 forming the endV walls of my press,

vertical -I-beams 1. The vertical and'crossbeams are then boltedtogether, as shownV at 5, these bolts also passing through the face plates 4, the 'nuts for these bolts bearing against washer plates Vshown at 6. The press table is formed of a base plate 7 bolted directly to the lower cross beams 3, as islshown at 8, while the press head is formed of a plate 9 movable toward and away from the press table 7 as will be described. By special reference to Fig. 7, it will be noted that the inside portions 10 of both upstandingvbeams 1 project slightlybeyond the face plates 4 to vforin trackways or guideways designed for coperation with guide members -11 securely bolted to the press head 9, as shown at 12.

This press head is then movable up and' the legs 10 of the beams 1. 'This upward' and downward movement is effected mechanically byV the provision of four vertically extending screws, those marked 18 having right hand threads, while those marked 14 are provided with left hand threads'for a purpose to'be presently described. These screws are attached to the press head by bolts 15 passing through foot extensions 16 at their base portions and are held in true spaced relation at their upper ends bya plurality of spacing bars designated 29. The press head as a whole, is held in anyposition of adjustment by vmeans of transverse plates 17 and 18, these two plates being bolted together as shown at 19 and carrying 'between their adjacent surfaces suitable but spaced from the adjacent set of gears. The two spaced sets are located apart distances permitting a working fit of the right and left hand worms 22 and 23 respectively, it being noted that these worms are in mesh with opposite gears of each set and consequently rotation of these worms will impart rotation to both gears of both sets. These worms are rigidly mounted upon a shaft 24 suitably journaled in the general framework of the press and carrying a pinion 25 on one end, this end being toward the left of F ig. 1. Coperating with this pinion is a complemental gear 26 mounted upon a stub shaft 27, this shaft also having rigidly connected therewith a hand wheel 28. 0n the opposite end of this shaft 24, there is loosely mounted a gear wheel having a suitable arrangement of external teeth 36 and a suitable arrangement of concentric internal teeth 37, this latter being shown in Fig. 2.

There is also mounted upon this end of the shaft 24, a spur pinion 38 rigidly carrying a hand wheel 39, this pinion being of a size to have a working t with the internal arrangement of teeth 3T and being further mounted upon the shaft by means of a keyed connection, thereby being rigid with respect to the shaft as far as its rotary movement is concerned, but being slidable thereon longitudinally.

The operation of the device thus far described is as follows: Any rotary motion given to the shaft 24 by rotation of the hand wheel 39, will cause rotation of the right and left hand worms 22 and 23. Since each set of worm wheels 20 are in mesh with each other, rotation of one will impart an opposite rotation to the other and consequently the worm in mesh with this positively rotating worm wheel 20 must have opposite threads from that of the first named gear. Therefore, to provide a downward movement for opposite rotations of these worm wheels, I have provided the right and left hand threaded screws 13 and 14. Also, to divide the pressure and strain more evenly throughout the surface of the press head, I have provided two sets of worms 20, this latter set being in mesh with each other and one worm wheel of each set being in mesh with the same worm as shown particularly in Fig. 6. In order to obtain an upward or downward movement by this arrangement, it is necessary that the screws on diagonally opposite corners be of the same thread arrangement or, in other words, the two screws on diagonally opposite Vcorners must both be either right hand or left hand. Therefore, rotation of the shaft 24 will cause a rapid up and downward movement of the press head as may be desired by means of the worm wheels and their screw connections.

In order that the amount of power required to move the press head up, will be about the same as that required to move it down under no condition of load, I have provided a counterweight structure designed to counterbalance the effective weight of the press head and its actuating mechanism. This counterbalance structure takes the form of two counterbalance weights designated 30 and slidable up and down in the channel formed between the leg portions 10 of the end beams 1. To the upper ends of these counterweights, there are attached by means of the I-bolts 31, cables 32, these latter passing upwardly and over sheaves 33 suitably journaled in bearing members 34, these latter being located on the I-beams 1, at a height slightly above the uppermost position of the press head itself. The opposite ends of these cables are shown as 'being attached at 35 to the upper edges of the press table y itself and by this arrangement, these counterweights act in opposition to the normal weight of the press table and its actuating mechanism.

In order to obtain a second and slower speed and consequently a greater pressure between the press table and press head by the same amount of applied power, I resort to the use of the hand wheel 28. Rotation of this hand wheel 28 imparts rotation to the gear wheel 26 and this latter imparts rotation to the shaft 24 by means of the pinion 25. The rotation caused by this last connection will, however, be slower because of the gear reduction between the gears 25 and 26.

To give a third reduction in speed, I have mounted on the stub shaft 40 a combined spur pinion and worm wheel 41 so located that it will mesh with the external teeth on the gear 36 and also with the worm shown at 42. This worm is mounted upon a shaft 43 carrying a hand wheel 44 at its outer eX- tremity. Rotation of this last named hand wheel 44 will impart rotation to the worm wheel 42 and from there to the shaft 24 carrying the right and left hand worms 22 and 23 by means of the gear connections made by the combined spur pinion and worm wheel 41 and the gear wheel 36. In order to lock this gear wheel 36 to the shaft 24, it is necessary that the pinion 38 and hand wheel 39 be moved to an innermost position in which the teeth on the pinion 38 engage the internal arrangement of teeth 37.

It will thus be apparent that I have provided a press in which a great amount of pressing power can be obtained by a simple manual operation. The arrangement of the screws 13 and 14 is such that the pressure Vwill be evenly divided over the surface of the press head and the weight of this press head will be counterbalanced by means of the counterweight structure 30.

Vilhat I claim, is:

1. In a press, a general framework whose ends are formed of vertically arranged I- beams, a stationary press table, a movable press head guided in its up and down movement by the legs of said I-beams, and a counterweight structure slidable up and down in the channel space formed between said Lbeams and said press table.

2. In a press, a general framework, a press table, a press head, a plurality of upstanding screws attached to said press head, a gear on each of said screws having threaded connection therewith and supported from said framework, a transverse shaft carried by said framework, worms on said shaft ar- Gopies of this patent may be obtained for ve ranged to mesh with said gears, a hand wheel directly keyed to said shaft, a pinion on the opposite end of Said shaft, a second gear meshing with said last named pinion, a hand wheel whereby said last named gear may be operated, a second pinion on said shaft, and a worm and worm wheel drive meshing with said last named gear.

In testimony whereof I aiiiX my signature in presence of two witnesses.

JOHN YOUNG. Witnesses WALTER E. L. BOOK, A. L. PHELPS.

cents each, by addressing the Commissioner of Patents, y

Washington, D. C.

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