AN IMPROVED SLIDING TOOL-HOLDER AND GUIDE, CHIEFLY DESIGNED FOR USE IN STAMPING, PUNCHING, AND SIMILAR MACHINES
Year: 1881

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for an Invention
of "AN IMPROVED SLIDING TOOL-HOLDER AND GUIDE, CHIEFLY DESIGNED
FOR USE IN STAMPING, PUNCHING, AND SIMILAR MACHINES." A communi-
cation from abroad by Ernest Dervaux-Ibled and Gabriel Nicolas Schoenberg,
both of Paris, France.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at
the Office of the Commissioners of Patents on the 24th June 1881.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED SLIDING TOOL-HOLDER AND
GUIDE, CHIEFLY DESIGNED FOR USE IN STAMPING, PUNCHING, AND SIMILAR
MACHINES." [A communication from abroad by Ernest Dervaux-Ibled and Gabriel
Nicolas Schoenberg, both of Paris, France.]
Experience has shewn that all the guiding devices used in machines or
apparatus which in their operation have to deliver blows very soon become
impaired or weakened by reason of the vibrations caused by the contact of the
tools at the moment of the concussions. This effect is produced either by reason
of the said vibrations or in consequence of the transverse component forces which
are the natural consequences of the stamping done on such machines; they first
cause the guide to work loose, and when such looseness reaches a certain degree
shocks are caused which break the guides.
The present Invention is designed to obviate these numerous defects by providing
a guiding device or arrangement in which there are lateral angular guides and
means for elastic compensation.
My Invention is illustrated in the accompanying Drawing, in which
Figure 1 represents in elevation a guiding arrangement having lateral angular
guiding faces and a sliding piece with means for elastic compensation constructed
according to my Invention.
Figure 2 is a horizontal cention thawn of an the line 35 AL
T
1

page_text: A is a rectangular piece, which (as will be obvious by reference to Figure 2)
does not require to be in contact with the flat parts of the guides B, B. At the
upper end of this piece A there may be provided a screw, a rod, or rings and hooks,
that is to say, it may be provided with any of the ordinary attachments, and at its
lower end this piece carries the various tools which may be required for operating
upon the material.
This piece or core A is traversed. by a suitable number of pins or bolts c, c,
which serve for supporting and guiding the lateral plates E, E, and moreover its
central part enters throughout its height into said plates, so as to facilitate
regulation or adjustment; these plates are designed to bear with a slight friction
upon the angular faces of the guides. To this end the rings D, D, are fitted with
slight friction upon the ends of the pins or bolts C, C, being at the same time sunk
in the plates E, E.
Before pushing the rings into the recesses several leather washers o, o, are
inserted in the bottom of each recess, and the rings are pushed over the washers;
the rings as well as the washers are pressed by the keys or pins G, G, which are
made sufficiently taper. If the keys or pins are so pressed as to bring the
plates E, E, in contact with the guides, which contact results from pressure exerted
upon the rings and washers, this pressure will remain elastic in any desired degree,
as it depends on the number of washers.
If the pressure upon the guides is found to be too heavy, it will only be
necessary to exert pressure in the opposite direction by means of four screws H, H,
upon which are nuts, the said screws being tapped into the plates and pressing
with their bearing points upon the piece A.
If the stroke of the sliding piece is to finish by shocks with a quick reaction, as
in stamping apparatus, and if moreover, by reason of the form of the pieces
stamped by the impact, the above mentioned reaction is complicated by horizontal
or transverse component forces which rapidly affect the frictional surfaces of the
ordinary guides or slides, the metallic vibrations resulting from all this strain
will be sensibly diminished in the leather washers, as this reaction is always
transmitted to the washers placed under the rings by the angular surfaces of the
guides.
If the slide at the end of its stroke is not required to bear a shock, and if
cooling water is not used, all the interstices between the slides and the plates E, E,
can be filled with sheets of paper placed one upon the other, which allow the play
of the friction or guiding slides to be rectified as the wear may require.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
24th December 1881.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED SLIDING TOOL-HOLDER AND
GUIDE, CHIEFLY DESIGNED FOR USE IN STAMPING, PUNCHING, AND SIMILAR
MACHINES." A communication from abroad by Ernest Dervaux-Ibled and Gabriel
Nicolas Schoenberg, both of Paris, France.
Experience has shown that the guiding devices heretofore used in machines or
apparatus, which in their operation have to act by percussion, are subject to rapid
deterioration by reason of the vibrations caused by the impact of the tools, or in
consequence of the transverse or lateral strains which are the natural consequences
of the action of such machines, the guides being first caused to work loose, and
then the looseness being increased until the shocks result in the breaking of
the said guides.
The present Invention is designed to obviate these defects by providing a
guiding device or arrangement in which there are lateral angular guides and means
for elastic compensation.
My Invention is illustrated in the accompanying Drawing, in which Figures 1
and 2 illustrate one manner of carrying the said Invention into practice, more
especially applicable for percussion machines of small dimensions.
Figure 1 represents in elevation a guiding arrangement having lateral angular
guiding faces and means for elastic compensation.
Figure 2 is a plan thereof, partly in horizontal section, on the line M, N,
Figure 1.
A is a rectangular block or piece which (as will be obvious by reference to
Figure 2) does not require to be in contact with the flat parts of the guides B, B.
At the upper end of this block or piece A. I provide means for its attachment,
which may be a screw, a rod, or rings and hooks, that is to say, it may be provided
with any of the ordinary means for this purpose, and its lower end is adapted to
receive either of the various tools which may be required for operating upon any
material.
This piece A is traversed by a suitable number of pins or bolts C, C, which serve
for supporting and guiding the lateral plates E, E, and moreover its central part
throughout its entire length is fitted to the said plates so as to facilitate the
regulation or adjustment of the same, these plates being designed to bear with a
slight friction upon the angular faces of the guides. Moreover the rings or
collars D, D, are fitted to bear with very slight friction upon the ends of the pins
or bolts C, C, being at the same time sunk in the plates E, E.
Before pushing the collars in the recesses several leather washers o, o, are
inserted into the bottom of each recess, and the collars are pushed over the washers,
the said collars as well as the washers being pressed down by the keys or
cotters G, G, which are made sufficiently taper! for this purpose. If the keys or
cotters are tightened up to force the plates E, E, into contact with the guides this
pressure, which is exerted upon the plates through the rings and washers, will
remain elastic, and its elasticity may be regulated to any desired extent according
to the number of the said washers.
"
If the pressure upon the guides is found to be too great it will only be necessary

page_text: to produce pressure in the opposite direction by means of four screws H, H,
provided with lock-nuts, the said screws being tapped into the plates and pressing
with their bearing points upon the piece A.
If the strokes of the sliding piece terminate in shocks with a quick reaction, as
in stamping apparatus, and if, moreover, by reason of the form of the pieces
subjected to impact in the machine, such reaction is complicated by horizontal or
transverse component forces which rapidly affect the frictional surfaces of the
ordinary guides or slides, the metallic vibrations resulting from these strains will
be perceptibly diminished or absorbed by the leather washers under the aforesaid
rings or collars as this reaction will always be transmitted to the said washers by
the angular surfaces of the guides.
If the slide at the end of its stroke is not subject to a shock, and if cooling
water is not used the interstices between the slides and the plates E, E, may be
packed with sheets of paper placed one upon the other to take up the slack or play
of the guides or guiding slides in proportion to the wear of the parts.
By the modifications illustrated in Figures 3, 4, and 5, the said Invention is
made applicable to stamping and similar machines of large dimensions.
In machines of small dimensions the aforesaid adjusting screws with their points
bearing on the block for regulating the friction on the faces are sufficient, but these
slides, the weight of which may vary from 50 to 150 kilogrammes, obviously differ
from the hammers of stamping machines, and it is necessary to provide the latter
with other means for regulation, which I will now describe with reference to
Figures 3, 4, and 5 of the Drawings.
A, A; are the posts or uprights of a stamping machine provided with a hammer
weighing, say, 600 kilogrammes or more. The general construction of the slides
is the same as hereinbefore described, the only differences being as follows, viz. :—
First. The lower parts of the sliding plates B rest on the projection C, C, C, C,
(Figure 3) forming part of the block D of the hammer; this projection is suitably
formed, as shewn at F, Figure 4, to receive a die swage or other tool.
Second. Instead of screws two forks H, H, as shewn in Figures 4 and 5, are used,
the branches or legs of which are mortised partly in the sliding plates and partly
in the narrow portions of the block D of the hammer, in such a manner that the
parts m, n, o, p, (Figure 3) bear properly on the bottom of their respective grooves
when the keys G, G; G, G, have brought the angular surfaces of the plates to bear
against the posts A with the necessary freedom for working.
It is evident that if the normal play or freedom becomes augmented by wear, it
will be sufficient to slightly loosen the keys, draw back the forks from their sockets,
then slightly file the faces m, n, m, n, (Figure 5), and restore the forks to their
proper position by driving in the keys G, G. When once regulated the forks will
be fixed by means of two screws S, S, on the block D of the hammer, the said screws
being provided with leather washers to prevent their becoming loose.
Where the adjustment has to be very accurate, that is to say, when the play or
slackness between the hammer and the angular slide-bars A, A, must not be more
than about 1/, of a millimetre, metallic and other dust which abounds in forges mix
with the greasy or lubricating substances on the bearing surface, whereby the said
lubricating substances are dried up and cause these bearing surfaces to bind.
It is therefore necessary to remove these accumulations as they are formed, and
the greasy substances should be stored where dust cannot have access to them, and
should be distributed automatically to the bearing surfaces.
The apparatus shewn in Figures 6 and 7 mounted on the hammer at
M, M', M, M, Figure 8, fulfils all the required conditions for this purpose as
hereinafter set forth; it consists of a piece of sheet iron or plate iron cut in such a
manner that the various parts may be raised on the said piece of iron, viz. :-
First. The two lateral ears n, n³, n¹¹, n¹¹¹, Figures 6 and 7.
Second. A part shewn in dotted lines at P, Q, Figures 6 and 7.
This dotted portion forms a continuation of the fastening cramp P, R, and is

page_text: .
raised in the interior part of the lubricator so as to serve as a bearing point for a
piece of thick leather T, U, V. Above this piece of leather is placed a piece of
sheet iron X, Y, Z, which causes the leather. to, rub against the slide bars A, which
it is necessary to keep clear of the dust.
The space-n, Q, P, K; is then filled with lubricating matter, such as grease mixed
with oil, which may be introduced when the leather is folded back on the
part T, Q
The attachment of these devices to the hammer adjacent to the four slide-bars, as
shewn in Figure 8, is easily effected by means of bolts having slit or split keys and
screwed in the upper part of the plates B, B, as shewn,
When the total weight of the hammer is from 300 to 1,200 or 1,500 kilogrammes,
and the parts are constructed as shewn in Figures 8 and 9, the plates B, B, have a
comparatively great weight; furthermore, these plates are well fitted on their
spindles C, C, C, C. If at any time it is necessary to release the forks quickly to
file their regulating faces, it is necessary to push back slightly the plates after
having loosened the keys. Two screw-threaded holes L, L, are formed in the lower
and upper parts of the plates B, B, to receive at the time of regulation two screws
whose points bear on the block D of the hammer; by turning these screws the plates
may be slightly moved back and the forks are at once released.
These screws are removed as soon as the filing off of the forks is finished and the
keys are driven into their corrected position.
The aforesaid Figures 8 and 9 illustrate in plan, partly in horizontal section and
in side elevation, the improvements in slides constructed according to this Invention,
with lateral, angular, and compensating guides, applicable to steam hammers or ram
blocks; these improvements are seen
First. In the devices 0, 0, 0, 0, for elastic compensation.
Second. In those shown at a, a, a, a, for the adjustment of the plates to the
projection of the block D.
Third. In those shewn at H, H, for the arrangement of the regulating forks.
Fourth. In those shewn at M, M, M, M¹, for the automatic cleaning and
lubricating of the slide-bars.
Fifth. In those shewn at L, L, for the easy and rapid disengagement of the
regulating forks.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,
First. In a hammering, stamping, or similar machine, the slide-bars provided with
lateral, angular, and elastic compensation guides, and with means for the regulation
of the friction, substantially as above described, and as shewn in Figures 1 and 2
of the Drawing.
Second. In a hammering, stamping, or similar machine, the special devices above
described and illustrated in Figures 3, 4, and 5, which permit the application of
the aforesaid slide-bars, provided with lateral, angular, and elastic compensation
guides to machines of large size, and consisting in the arrangement of the plates on
the block of the hammer, and in the employment of the fork as the means for
regulation, substantially as set forth.
C
Third. In a hammering, stamping, or similar machine, the means described and
shewn in Figures 6 and 7, for removing metallic and other dust which accumulates
on the bearing surfaces, also for storing the lubricating substance where it is
inaccessible to dust, and for the automatic distribution of the lubricating matter to
the bearing surfaces, substantially as set forth.
Fourth. The means above described and represented in Figures 8 and 9, for
drawing back the plates so that when the plates support a great weight the
spindles may be removed to permit the filing of the regulating faces, as above
set forth.
Fifth. The adaptation to a hammering, stamping, or similar machine, of the

page_text: improvements, substantially as specified in the first, second, third, and fourth
claiming clauses, separately or combined, for the purposes specified.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Twenty-fourth day of December, in the year of our Lord
One thousand eight hundred and eighty one.
W. ROB. LAKE,
(L.S.)