improvements in Vices and Clamps and in Adjustable Supports for Use in Connection therewith and in other Relations where it is Desirable to hold or Support Differently Inclined Surfaces.
Year: 1885

page_text: improvements in Vices and Clamps and in Adjustable Supports
for Use in Connection therewith, and in other Relations
where it is Desirable to hold or Support Differently Inclined
Surfaces.
I MAX HECHT of 21 Mincing Lane in the City of London Merchant (a com-
munication to me from abroad by Geo. A. Alden & Co of 169 Congress Street,
Boston in the United States of America Merchants) do hereby declare the nature
of this invention to be as follows:-
.
In that class of clamps in which a bar or beam is employed having a fixed arm
at one end in which is a clamping screw and a sliding arm or jaw which is made
rigid by the pressure against it of the article clamped the slide to which the
moveable jaw is jointed is according to this invention composed of two ears at
opposite sides of the beam connected by a cross piece at the back edge of the beam
and having the moveable arm or jaw pivotted to their front ends. When the outer
end of this arm or jaw is pressed away from the clamping screw a portion of the
inner end of the jaw is pressed against a shoe interposed between the end of the
arm and the front edge of the bar or beam and at the same time the portion of
the slide which extends across the back edge of the beam is pressed against this
edge. The slide and the arm or jaw which it carries are in this way locked to the
beam so that they cannot be moved while pressure is applied to the upper end of
the jaw, the beam being firmly grasped by them. The form of the inner end of
the arm or jaw may be variously modified.
If
It may be formed simply as a short lever arm or as an eccentric or cam or it
may be of other forms without departing from the spirit of the invention.
preferred the inner end of the arm may be made to bear directly against the front
edge of the beam instead of on a shoe interposed between the jaw and the beam,
it is however preferred to use a shoe as it protects the edge of the beam from wear
and may be renewed at slight expense when worn.
When it is desired to move the arm or jaw its outer end is pressed towards the
screw to cause its inner end and the slide to release their hold on the beam-the
jaw and slide may then be moved freely along the beam in either direction.
r

page_text: Preferably a spring is applied to act upon the moveable arm or jaw to cause
the cam or eccentric at its inner end to bear constantly upon the shoe and press it
against the front edge of the beam.
To adapt the jaws to hold between them articles of irregular shape one or other
of the jaws may carry a plate having a hemispherical boss fitting in a socket in
the jaw or a wedge shaped plate may at its centre be pivotted to each jaw-or an
adjustable support for use in connection with vice jaws and in other relations
where it is desired to hold or support differently inclined surfaces may be formed
of two wedge shaped plates placed one over the other and pivotted together by a
central pivot at right angles to the abutting surfaces-whilst the outer side of one
of the plates is pivotted by a central pivot at right angles to that side to a vice
jaw or other holding or supporting surface.
This pivot may be a flanged stud to enter a key hole slot in a vice jaw or it may
be a shank adapted to enter a holder or socket in the tail stock or other part of a
lathe to support an object having two opposite surfaces which are not parallel
while said object is being acted on by a lathe cutter or by a drill or other tool.
The support may also be used in a drilling machine to keep one face of a wedge
shaped or triangular body at right angles with the axis of the drill so that the
latter will not have a tendency to run or move sidewise as it might do in entering
a surface which is oblique to the axis of the drill.
The outer supporting surface may be caused to stand at its greatest angle with
the rear surface of the inner wedge plate by turning the two wedge plates so that
their thickest portions coincide or to stand parallel with such rear surface by
causing the thinnest portion of the one wedge to coincide with the thickest portion
of the other wedge or by suitable adjustment of one or both wedges the supporting
surface may be caused to stand at any intermediate angle.
The two wedge plates may if desired be kept bearing against one another by
means of a spring so as to prevent the outer one from turning too freely-the wedge
plates may also be hollowed in the surfaces which are towards one another and
only be in contact around their periphery and at the centre-The outer surface of
the outer wedge may also be covered with rubber or other yielding material to
prevent injury to objects bearing against it.

page_text: for Use in Connection therewith, and in other Relations
where it is Desirable to Hold or Support Differently Inclined
Surfaces.
I MAX HECHT of 21 Mincing Lane in the City of London Merchant (a com-
munication to me from abroad by Geo. A. Alden & Co of 169 Congress Street,
Boston in the United States of America Merchants) 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 clamps in which a bar or beam is
employed having a fixed arm at one end in which is a clamping screw, and a
sliding arm or jaw which is made rigid by the pressure against it of the article
clamped.
The invention also relates to appliances to facilitate holding articles having
inclined surfaces in clamps and vices and other tools.
Of the accompanying drawings forming a part of this Specification, Figure 1
represents a side elevation of my improved clamp. Figure 2 represents a longi-
tudinal section of a portion thereof. Figure 3 represents a section on line x. x.
Figure 1. Figure 4 represents a section of a modification.
In the drawing a represents the beam or bar of a beam clamp. b represents an
arm formed on or rigidly attached to the beam at one end. c represents a screw
working in a tapped socket in the arm b and having a clamping plate c¹ at one
end. d represents a slide composed of two ears at opposite sides of the beam and
a connecting cross piece under said beam.
To the upper ends of said ears is pivoted at e the moveable jaw f which
cooperates with the screw c in holding the article to be clamped. When pressure
is exerted on its upper end in the direction indicated by the arrow in Figure 1 a
portion of the lower end of the jaw f at one side of the pivot e. is pressed down-
wardly on a shoe j interposed between the jaw and the upper edge of the beam a
and at the same time the portion of the slide d extending across the lower edge of
the beam is pressed upwardly against the said lower edge. The slide and jaw are
thus locked to the beam so that they cannot be moved while pressure is applied to
the upper end of the jaw, the beam being firmly grasped by the plate or block and
the lower portion or cross bar of the slide. The form of the lower end of the
jaw may be variously modified. In Figures 1 and 2, I have shown it as extended
and slightly curved, while in Figure 4 it is shown as a cam. Other modifications
may be adopted without departing from the spirit of my invention.
If preferred the jaw f may bear directly on the edge of the beam instead of on &
shoe interposed between the jaw and beam. I prefer the shoe however because it
protects the edge of the beam from wear and may be renewed at slight expense
when worn.
The jaw may be provided at its upper end with pivoted wedge shaped
plates (Figures 1 and 2) like those described in my Specification further
on, or with a plate m having a hemispherical boss fitting in a socket in the jaw f

page_text: as shown in Figure 4. The jaw is thus adapted to hold articles of irregular
shape, the plates 7 or m being adapted to assume various inclinations.
When it is desirable to move the jaw f, its upper end is pressed forward to cause
its lower end and the slide d to release their hold on the beam. The jaw and
slide may be then freely moved on the beam. When the jaw fis adjusted and the
article to be clamped is placed between the jaw and the screw c, the pressure of
the article against the jaw f effected by the screw, causes the jaw and slide to
grasp the beam as above described, the jaw being thus held as firmly as if it were
rigidly attached to the beam.
I prefer to place a spring 8 under the forward portion of the jaw f as shown in
Figure 2, said spring normally pressing the jaw backwardly and causing the
portion of its lower end back of the pivot to bear with a yielding pressure on
the shoe so that the jaw is normally in position to be instantly affected by the
pressure against it of the article being clamped. Said spring may be a piece of
rubber placed between the lower edge of the beam and the slide d as shown in
Figure 4.
My adjustable support for use in connection with vice jaws and in other
relations where it is desired to hold or support differently inclined surfaces
consists in two independently rotatable sections each of varying thickness as
I will now proceed to describe.
Figure 5 represents a side elevation of my improved adjustable support applied
to a vice jaw, the latter being shown partly in section. Figure 6 represents a
sectional view of the same. Figure 7 represents a side view with the supporting
face in a different position. Figure 8 represents a front view of the vice jaw shown
in Figure 5. Figure 9 represents a hand screw to which my improvement is
applied. Figure 10 represents a side view of my improved support showing the
rear section provided with a shank adapted to be inserted in a socket in the tail
stock of a lathe. Figure 11 represents a modification.
o represents my improved adjustable support composed of two sections 2. 3. each
of which varies in thickness, being thickest at one side and gradually decreasing
in thickness to the opposite side like a wedge as shown. The outer section 2 is
connected to the inner section 3 by a pivot 4 at right angles to the abutting faces.
When the outer section is rotated on its pivot its outer face which constitutes the
bearing or supporting surface is caused to assume different angles as will be readily
seen. The inner section 3 is provided with means whereby it may be pivotally
connected to a vice jaw or other object. In Figures 5. 6 and 7 I have shown the
back of the section 3 provided with a flanged stud 5 which enters a key hole
slot 6 in a vice jaw b, and is capable of turning in the said slot to give a wider
range of adjustment to the supporting surface than is afforded by the rotation of
the outer section.
The supporting surface may be caused to stand at its greatest angle with the
rear surface of the inner section by turning the two sections so that their thickest
portions coincide as shown in Figures 5. 9 and 10 or to stand parallel with the
said rear surface by causing the thinnest portion of the one section to coincide with
the thickest portion of the other section as shown in Figure 6. By suitable
adjustments of one or both sections the supporting surface may be caused to stand
at any intermediate angle.
In Figure 10 I have shown the inner section provided with a shank 7 adapted
to enter a holder or socket in the tail stock or other part of a lathe to support an
object having two opposite surfaces which are not parallel while the said object is
being acted on by a lathe cutter or by a drill or other tool. The support may also
be used in a drilling machine to keep one face of a wedge shaped or triangular
body at right angles with the axis of the drill, so that the latter will not have a
tendency to "run or move sidewise as it might do in entering a surface which is
oblique to the axis of the drill.
"
I prefer to interpose a spring 8 between the head of the pivot 4 and the bottom
of a socket 9 formed in the outer section, as shown in Figure 6. The said spring

page_text: presses the outer section against the inner and thus prevents the outer section
from turning too freely so that the outer section is not likely to be accidentally
displaced by gravitation of its heaviest side when it stands in positions like those
shown in Figures 6 and 7. The proximate surfaces of the two sections may
be roughened or corrugated to increase the holding power of the spring and
additionally guard against accidental displacement of the outer section. The
supporting surface may have a covering 10, of rubber or other yielding material as
shown in Figure 5 to prevent injury to objects bearing against it.
A modification is shown in Figure 11 in which the two sections 2, 3 are
separated, and each is pivoted to a jaw of a vice or clamp. The sections thus
arranged are capable of producing the same results that are attained by the use of
the two connected sections and an opposing jaw as shown in Figure 9.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1st. In a clamp, the combination with the beam or bar, of a slide adapted to
move thereon, and a jaw or lever pivoted to the said slide and formed substantially
as described so that pressure against the jaw will cause the jaw and slide to grasp
the beam, as set forth.
2nd. The combination of the beam, the slide adapted to move thereon, the jaw
pivoted to the slide and the block or shoe interposed between the jaw and beam as
set forth.
3rd. The combination of the beam, the slide adapted to move thereon, the jaw
pivoted to the slide and a spring whereby the grasping portion of the jaw is
normally held against the beam or against a shoe interposed between the beam
and jaw, as set forth.
4th. An adjustable support composed of two pivotally connected and inde-
pendently rotatable wedge shaped sections in contact with each other, as set forth.
5th. An adjustable support composed of an inner wedge shaped section having
means substantially as described for attachment to a vice jaw or other support
and an outer wedge shaped section pivoted to and bearing upon the inner, as
set forth.
6th. The combination of the two wedge shaped sections pivotally connected and
in contact with each other and a spring whereby one section is pressed against the
other, as set forth.
7th. The combination with the jaws of a vice or clamp of the two independently
rotatable wedge shaped sections 2, 3 as set forth.
8th. The adjustable support having a yielding covering 10, as set forth.