Improvements in Drawing Presses Used for Drawing or Raising Sheet Metal Hollow Ware.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Drawing Presses Used for Drawing or Raising
Sheet Metal Hollow Ware.
DANIEL SMITH Castle, Iron Works Raglan Street Wolverhampton Staffordshire
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to effect a further improvement on the means.
described and shown in my Letters Patent No. 12888, 1893, giving greater simplicity,
less number of parts, less cost in construction, and to further facilitate the removal
of the pressure plate, so that the same press may be readily used for reducing or
cutting-out purposes. These improvements, consisting chiefly in the addition of
flanged inclines or slotted grooves formed on, or within the upper ends of the
swinging or oscillating levers used to hold down the pressure plate, so that by causing
each of the rollers, pins or projections on the plunger slide to engage into the slots
or grooves within the upper en.ls of the oscillating levers, they, in their up and
down stroke, are made to serve the double purpose of foreing and withdrawing the
swinging or oscillating levers from under the rollers or side brackets, formed on the
inside of the main casting, and at the same time lifting the pressure plate, thereby
dispensing with the withdrawing lever, lifting pin or slotted link used in my Letters
Patent previously referred to.
DANIEL SMITH,
Applicant.
COMPLETE SPECIFICATION.
Improvements in Drawing Presses Used for Drawing or Raising
Sheet Metal Hollow Ware.
DANIEL SMITH Castle Iron Works Raglan Street Wolverhampton Staffordshire
Mechanical Engineer do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :--
The object of this invention is to effect a further improvement on the means
described & shown in my Letters Patent No. 128883, giving greater simplicity,
less number of parts, less cost in construction, and to further facilitate the removal
of, the pressure plate, so that the same press may be readily used for reducing
or cutting-out purposes.
These improvements, consisting chiefly in the addition of flanged inclines or slotted
grooves formed on or within the upper ends of the swinging or oscillating levers
used to hold down the pressure plate, so that by causing each of the rollers, pins or
projections on the planger slide to engage into the slots or grooves within the upper

page_text: I may use pegs without rollers, projections, or their equivalent, as a substitute to
work in the channels of the parts I & I' so as to open, close and lift them, it is
also clear that studs & rollers or studs without rollers may be affixed to the upper
end of the parts I & I' and these may engage in suitably formed inclined slots,
grooves or guides in the front & back of the slide E, or plates with suitable slots
or guides may be affixed to either face of such slide.
Having now described and ascertained the nature of the invention what I do
claim is as follows:-
1. The use of the curved or incline slots or channels and flanges n formed on
the upper ends or thereabouts of the parts I & l' in Figs. 1, 2, 3, 6, & 7 for the
purpose of suspending the pressure plate H from the forcer slide E by means of the
rollers t, pegs, projections or their equivalent, and by the vertical motion of
the slide E causing the swinging parts I & I' to open & close so as to force their
retaining shoulders & under the side brackets m or rollers s, the upward motion of
the slide E withdrawing them as berein described & shown & for the purpose
stated.
2. The formation of suitably curved or inclined slots in or on the front & back of
the slide E with pegs, rollers or suitable projections on the inner faces of the upper
ends or thereabouts of the parts I & I' which are actuated by the curved slots,
or plates with suitable slots affixed on the front & back faces of the slide E aforesaid,
for the purpose of raising & lowering the pressure plate and operating the parts I & I',
as herein described & partly shown by the accompanying drawings for the purpose
as herein stated.
3. The combination of the retaining shoulders with the inclined channels ¹ and
the trunnions of the parts I & I', substantially as herein described & shown for the
purpose set forth.
Dated December 12th 1006
DANIEL SMITH,
Applicant.