Improvements in Machines for Marking Circular Articles.
Year: 1893

page_text: Date of Application, 2nd June, 1893-Accepted, 8th July 1893
COMPLETE SPECIFICATION.
Improvements in Machines for Marking Circular Articles.
I, AARON BURNSIDE SHIPPEE, of Providence, in the County of Providence,
and State of Rhode Island, United States of America, Gentleman, 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 :-
This invention relates to that class of marking machines used to mark metallic
articles of a circular or cylindrical form, such as twist drills, screw-taps and other
like articles. Its object is to mark those articles uniformly, quickly, and on
opposite sides or otherwise as desired. It is also arranged to use dies costing much
less because more easily made, it having been customary heretofore to use a rotary
die for this purpose, which is one of the most costly forms of dies in use.
It is
illustrated in the accompanying drawings.
Figure 1 is a front elevation of the marking machine, the handles of the levers
being omitted.
Figure 2 shows an elevation of the side of the machine to the right in Fig. 1.
Figure 3 is a vertical section from front to back, on line - Fig. 1.
Figure 4 is an elevation of the side to the left in Fig. 1.
Figure 5 is a to view of the vertical die block, with its slides and means for
moving it.
The machine when ready for use consists of a standard A, having a flange at its
base by which it can be secured to a table or bench by means of screw-bolts. On
the upper front part of this standard are two slides a, a, which form a way between
them for a sliding block d, which is held therein in the usual way with V-shaped
sides and set-screws e, e, to take up the play and cause the block to slide closely in
its place. This block is moved up and down by means of a lever f, pivoted at one
end to the standard A at h, and connected by the rod b, to the lever g, which is
held at its inner end by a stud i, fast in the standard back of the block d, and
which projects through an opening in that block. This lever g, moves the block
by a stud fast in the block, and passing through a hole in the lever g (see Fig. 1).
A hole is made in the lower end of the block d, to hold a vertical cylindrical die p,
which is held in place by means of a set-screw t, and is adjusted vertically by
means of a screw r, passing from the opening in the block down to the upper end
of the die p.
Another blocks, is arranged in like manner to slide on a horizontal way between
the sides y, attached to the base of the standard A. The blocks is moved in its
way by means of a rod m, which extends from the back end of the block through
the standard A, and has a head on its back end to which a rod o, is pivoted, that
connects at its front end to the end of a knee-lever v, which is pivoted to the
standard A at l.
A handle c, on the other end of the knee-lever v, serves to move the parts by, to
throw the block back and forward in its slides. The block s, has a hole made in it
to receive another vertical die a¹ which is held in place by a set-screw d¹ in the
side of the block (see Fig. 2) and a screw e' is placed vertically under the die a',
and a countersunk recess is made in the under side of the block to receive the head
of this screw, which adjusts the die a vertically by screwing up or down in the
block. A gage-plate f¹ is attached to the blocks, on one side by a screw gl passing.
through a slot in the gage and screwing into the block s. This gage extends up
across the face of the block and can be set forward or back at any desired point of
the divided scale h¹ (see Fig. 4).
The mode of operation is as follows: Starting with both handles c, o¹, raised, in

page_text: which position the die block d, is raised and the lower blocks, is clear forward, as
shown in Fig. 3, the article n' to be marked, is laid across the blocks, against the
gage-plate f, just back of the die a¹ and the block d, with the die p, is brought
down on the article n' by bringing the handle o' down. Then the handle c, is
moved down, carrying back the blocks, by means of connecting rod o, and bar m,
rolling the article in between die-blocks s, d, under the die p, and over the die a¹
and thus get the impression of one die on one side and of the other on the opposite
side. The marking figures in the ends of the dies, are made to project by means of
their respective adjusting screws above the faces of the blocks, just the distance it
is desired to have the marks penetrate into the article and no amount of pressure
on the handle o' will make them go any deeper, because of the contact of the faces
of the blocks, so that the marking is made uniform, not only on different parts of
the same article, but also on articles successively marked.
When it is desired to mark only on one side of an article either one of the dies
can be moved below the face of its block by turning back its adjusting screw and
easing its set screw so that it will make no impression, though the face of the die
remaining above the face of its block, will mark as before.
This way of marking gives very accurate, uniform results as to position of the
marks and depth of impression, and is very easily performed, as the friction of
turning the article is reduced to a rolling one, and only a small part of an impression
is made at any one time.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, i declare that what I
claim is
1. In a machine for marking circular or cylindrical articles, a die-block carrying
a stationary die, and means for moving it vertically, a lower block adapted to
reciprocate horizontally under sad vertically movable die-block, and to give a
rolling motion to the article being marked and means for moving the lower die-
block, substantially as specified.
2. In a machine for marking circular or cylindrical articles, the combination of
a vertical die-block having a vertical adjusting screw back of the die, with a
horizontal die-block having an adjusting screw placed in said block vertically under
the die, and means for moving said horizontal die block forward and back under
said vertical dic-block, substantially as set forth.
3. In a machine for marking circular or cylindrical articles, the combination of
a block for holding a die, and means for moving the block vertically, with a die-
block sliding horizontally under said vertically moving block, dies fitted in said
blocks, a gage-plate attached to said horizontally moving block, and means for
moving the latter block horizontally, substantially as set forth.
Dated this 2nd day of June 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.