US1301888A - Matrix-drying press. - Google Patents

Description

W. H. WALTON & H'. D. TAPPAN.

MATRIX DRYING PRESS.

APPLICATION FILED APR-21. 1911.

1,891,888; Patented Apr. 29,1919.

2 SHEETSSHEET IL MIMIMWWW l; 7 i R 1 //v VEA/TORS WA LTER H.WALTOJ .HARRYD. :ZHPPAN BY WW5 W. H. WALTON &' H. D. TAPPAN.

MATRIX DRYING PRESS.

APPLICATION HLED APR. 2!. I917.

mwmasa Patented Apr. 29,1919.

2 SHEETS-SHEET 2.

In? inli lllllllln l ,3 15/ {(5 /A/VENTORS 13 1% WALTER H.WALTON MRRYDMPPAN ED STATES PTNT nine.

WALTER H. WALTON AND HARRY D. TAPPAN, F PHILADELPHIA, PENNSYLVANIA.

MATRIX-DRYING- PRESS.

Specification of Letters Patent.

Patented Apr. 29', 1919.

Application filed April 21, 1917. Serial No. 163,758.

. drying to be compensated by springing preschine. Fig. 2 is a plan view of same.

sure of the platen, whereby suflicient pressure upon the matrix and the die is always maintained. Our machine is simple in construction, very quick in operation, and gives an exceedingly even pressure upon the matrix.

Matrix making machines are used to make matrices for stereotyping. The die, which is the matter to be stereotyped, and may consist of type set in a frame, another stereotype, an electrotype, or any of many other things of this characteror a combination of them, has placed over it is a paper like material,

the matrix, which which is usually pressed down on and into the die, and then placed in the matrix making machine. beneath sure exerted by the machine until thoroughly dried. Textile or other yielding fabrics are placed over the die and matrix and their and the matrix shrinking occurs during the drying.

Figure 1 is a side elevation of the. Inna;-

, 1g. 3 is a side view of same up to the bottom of the cross beam of the press. Fig. 1 is a view of a die and a superimposed matrix. Fig. 5

is a vertical section of a compressor, and Fig. 6 is a view of the left half of the platen with the superimposedsprings.

2] is the heated table usually heated by steam and called, independently of how heated, the drying table the frame work of the press being formed of the standards 1, 1, and the cross beam 3 The vertically moving platen 5 is adapted to hold, between it and the drying table, the die 17, the matrix "fiat andthe sanijgressible textile ether blankets and heated under the presmaterial technically known as the blankets 18. The platen 5 is provided with positively acting mechanism and springing mechanism for driving down the platen on the blankets, matrix and die. The most convenient form of which I am at present aware of combining and constructing these two mechanisms is as follows: A spider 6 has placed between it and the platen, the springs 8. By distributing these springs in. the form of a circle (see particularly Fig. 6) a very even pressure is given to the platen especially as springs can be secured of standard shape and elasticity. Between the spider and the beam of the press is a hydraulic compressor 24 which for reasons seen below we regard as the best device for giving the positive pressure of thejplaten 'upon the blankets, matrix and die. The base 31 of this compressor 24 rests on the spider 6. The gage 27 indicates the pressure exerted by the compressor 24. The mechanism of a good form of the compressor is shown in Fig. 5. The head 25 is screwed to the concentric cylinders 34:, 36. The cylinder 35, fits between them and is closed atthe bottom. The plug 37 carries the valve 32 held against its seat by the spring 33. The bucket 37 is carried by the cylinder 36 and has the washer 39 fitting against the inside of the wall of the cylinder 35. The plunger 29 has the valve 313, the head 27 is operated in any usual way. The head is manipulated by the handle 23, which, when in normal position, has the downward travel imparted to it by the plunger 29 limited by the stop 26 impinging against an enlarged part of the arm 23, but which, when moved from normal position allows the plunger 29 to be depressed until this depression opens both of the valves 32 and 313. This construction gives the press a convenient quick release mechanism for relieving the compression on the platen instantly. The gage 37 is connected beneath the valve 32. The standard 30 has a socket in which the cylinder 34:

. springs 9,

useful results. The thrust of the compressor is directly downward and can be halted at any point where the exact amount of compression desired has been attained. The

direct downward thrust has especial advantages in our device; among them that although necessarily the platen is brought at first into light contact with the matrix,

and its pressure on the matrix then increased by the compression of the springs, the matrix will not be disturbed by any lateral or torsional tendency of the compressor. Such movement would give an irregular motion to the springs and would frequently blur and spoil the matrix. The varying thickness of the material to be pressed and the variation to some extent of the pressure to be exerted upon the matrix makes frequently very inconvenient a compressor with a fixed length of travel.

'We prefer to lift the platen 5 by hand assisted by a counter balance. The form of counter balance we adopt in practice is 9 secured by the staples 7, 7 and adjustably nuts 15, 15, balance should not be suflicient to lift the platen 5, so that the latter, unless otherwise supported will sink of its own weight upon the blanket 13, matrix 191 and die 17 The hand mechanism for lifting the platen 5,

consists in practice of the head 16, movable vertically and provided with guides 40, 40, which the platen be secured to the head by nuts 14:, 14. The head is lifted by and with tie rods 11, 11, by is lifted. These rods can a toggle mechanism very conveniently consisting of a handle 19 secured to the shaft 20 having hearings in the beam 3, and having the arm 12 connected by the pivot 21 to the arm 13, which is secured to the shaft 22.

The shaft 22 has bearings in the head 16.

The shafts 20 and 22 extend through the beam 3 and the head 16 and have the arms.

121 and 131 secured to them. These arms are pivoted similarly to the arms 12 and 13 and the toggle can be suitably stopped just past 3 dead center.

The platen 5 being ralsed, the toggle can a be pushed past dead center, the plunger 29 being depressed so as to open both valves 32 and 313, the platen will settle down of its own weight on the blanket 18, the matrix 191 and the die 17. The compressor is then brought into action, and the compression continued until the desired pressure is attained, which will be indicated by the gage 27. If the gage indicates a lowering of the pressure through the too great relaxing of the springs caused by the shrinking of the 7 blanket, and matrix, the pressure can be in creased by the compressor. Of course, the -springs are made of such strength and elasattached to the beam 3 by the tie rods'lO, 10 which are adjustably held by the We prefer that the counter V 1 tion with the drying table,

ticity that no need will exist once the pres- 6 sure is applied for any action of the compressor, in practice.

When the matrix hasbeen dried, the plum ger 29 can be depressed opening the .valves 32 and 313and the platen is easily lifted 7i by thetoggle.

ec1aim.:. -..1., 1. Ina matrix drying press, the combination with the drying table, press frame and platen, of a positive acting hydraulically 7 operated compressor having a direct down ward thrust and elastic yielding devices operatively situated between the platen and the press frame. I

2. In a matrix drying press the combination with the drying table, press frame and platen of a positively acting compressor and elastic; yielding devices operatively situated between the press frame and the platen and an independently operated platen lifter.

3. In a machine-for drying matrices, the

combination with the drying table, press frame and platen of a counterbalance for the platen, a positively acting compressor, elastic yielding devices operatively situated between the platen and the press frame and a platen lifting mechanism.

4. In a matrix drying press, the combination with the drying table, the press. frame and platen of a positivelyacting hydraulic 95 and platen of a positively acting compressor, and elastic yielding devices operatively situated between the press frame, and the platen, a counterbalance for the platen, and a toggle mechanismffor liftin and lowering the platen. 1 v p v 7 In a matrix dryingpress, the combina tion with the drying table, press frame and platen of a: compressor, operative connect ions between the. press frame and the platen,

a counterbalance for said platen, a head con nected to the platen by'links and a toggle mechanism for raising the platen. V

8. In a matrix" drying-press,thecombination with the drying table, press frame and platen of a compressor operat ive .connec-,

, tions between the press frame and the platen, a direct downward thrust, a spider, and

a counterbalance for said platen and an insprings between the spider and the platen, 10 dependent mechanism for raising said and arranged approximately in a circle. platen, the counterbalance being insufficient In testimony whereof we afiix our signa- 5 in itself to raise the platen. tures.

9. In a matrix drying press, the combination of the frame, bed, and platen, of a posi- WALTER H. WALTON. tively acting hydraulic compressor, having HARRY D. TAPPAN.

Copies of this patent may be obtained for five cents each, by addressing the "Gommiaaioner of Entrants, wmmn m, n. W

Images