US1206250A - Hydraulic press. - Google Patents

Description

H. B. REYNOLDS.

HYDRAUEIC PRESS.

APPLICATION FILED FEB. 3 I916.

4 SH ETS-S EET 1.

H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FILED FEB. 3. I9l6.

Patented Nov. 28, 1916.

4 SHEETS-SHEET 2.

H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FILED FEB. 3. I916.

Patented Nov. 28, 1916.

4 SHEETSSHEET 3.

II|I.I| I II I IH HI I IH I I I I I I I I I I IH H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FiLED FEB. a. 1916.

Patented Nov. 28, 1916.

4 SHEETS SHEET 4.

as rand in,

HAROLD BULKELEY REYNOLDS, O RENEREW, SCOTLAND, ASSIGNOR 'IO THE EABCOCK it WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HYDRAULIC PRESS.

Application filed February 3, 1916; Serial No. 76,066.

To all whom it may concern:

Be it known that I, HAROLD BULKELEY REYNOLDS, a subject of the King of the United Kingdom of Great Britain andIreland, and residing at Renfrew, Renfrewshire, Scotland, have invented a certain new and useful Improvement in Hydraulic Presses, of which the following is a specification.

This invention relates to improvements in hydraulic presses for forging hollow articles, particularly projectiles and the like,

' and has for its object to provide for more perfect guidance of the mandrel coaxially with the die than heretofore accomplished whereby projectiles or like articles of uniform thickness may be produced.

The invention is illustrated in the accom panying drawing in which- Figure 1 shows one embodiment in vertical "section; Figs. 2 and 3 are fragmentary views showing collectively vertical sections of a modification and Fig. 4c is a view in section showing a cross-head and slideway hereinafter referred to.

According to the embodiment illustrated in Fig. 1, the improved hydraulic press comprises a main ram terminating in a mandrel 1 constrained to move axially into a hollow die 2 containing the billet 2 and carried by a die-holder 2 The mandrel 1 is enveloped by, and is slidable relatively to, a bush 3 which may be of frusto-conical form and is constrained to perform axial movements into and out of engagement with a counterpart pocket. For imparting the requisite movements to the bush 3 there are provided supplementary hydraulic rams of which extensions L of the plungers are guided in bushes 5 and secured to a member 6 in which is housed the bush 3.

It will be readily understood that, as the bush 3 is constrained to enter a pocket located immediately: adjacent to'the die 2, the mandrel 1 will, in operation, always occupy a position coaxial with the die 2.

To compensate for any tilting movement of the member 6 due tofailure of the extensions 4; to move in unison, the bush 3 is formed at 9 with a spherical surface presenting in conjunction with a correspondlngly formed washer 10 a-universal joint. It follows that tilting movement of the member 6 is not communicated to the bush 3.

According to the modification illustrated in Figs; 2 and 3 the mandrel l is disposed horizontally and the bush 3 is adapted to be Specification of Letters Patent. P t 2%, was,

movedby a single ram 6 which is fitted with a crosshead 7 tracking a slideway 8. In this embodiment the final operation of pressing the billet is efl'ected by moving the die 2 toward the mandrel l, the mandrel 1 being temporarily restrained against retrograde movement by a hydraulically operated snib 13 cooperating with a shoulder on the mandrel holder.

What I claim is 1. In a hydraulic press, in combination, a billet-receiving die, a mandrel adapted to enter said die, hydraulic means for efi'ecting relative movement of said die and said mandrel, a bush sleeving said mandrel, and hydraulic means for moving said bush, substantially as and for the purpose set forth.

2. In a hydraulic press, the combination of a billet-receiving die with a pocket coaxial therewith, a mandrel to enter said die, hydraulic means for efiecting relative movement of said mandrel and said die, a bush to enter said pocket and to guide said mandrel, and hydraulic means for operating said bush, substantially as and for the purpose set forth.

3. In a hydraulic press, the combination of a billet-receiving die with a pocket coaxial therewith, a mandrel to enter said die, a ram for eflecting relative movement of said mandrel, a bush to enter said pocket and to guide said mandrel, hydraulic means for operating said bush, and a universal joint mechanically interposed between said hydraulicmeans and said bush, substantially as and for the purpose set forth.

4. In a hydraulic press, .the combination of a movable billet-receiving die with a pocket coaxial therewith, a mandrel to enter said die, a bush to enter said pocket and guide said mandrel, hydraulic means for moving said mandrel into a position adja cent to said die, hydraulically operated means for temporarily sustaining said man a crosshead on said ram, and a slideway drel in such position and hydraulically optracked by said crosshead.

erated means for moving said die into op- In testimony whereof I have signed my erative relationship with said mandrel, subname to this specification in the presence of 5 stantially as described. two subscribing Witnesses.

5. In a hydraulic press, the combination of a billet-receiving die with a pocket coaxial therewith, a mandrel to enter said die, means Witnesses: for operating said mandrel, a bush to enter WALLACE C'RANsTON FAIRWEATHER, 10 said pocket, a ram for operating said bush, HENRY MAsoN.

HAROLD BULKELEY REYNOLDS.

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