Improvements in or connected with Picks or other like Tools.
Year: 1894

page_text: Date of Application, 21st Aug., 1894-Accepted, 22nd Sept., 1894
COMPLETE SPECIFICATION.
Improvements in or connected with Picks or other like Tools.
I, JOHN ZACHARIAS COBLENS, of No. 323 East 22nd Street, City, County and
State of New York, United States of America, 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 has reference to certain improvements in or connected with picks
of that class, which are known as "eyeless picks," and more especially to improve-
ments in the haudle-sockets for picks, by which a very reliable connection between
the pick-bar and the handle is obtained and a strong and durable pick is obtained;
and the invention consists of a pick or other tool, in which the handle-socket is
formed of edge-pieces and side-plates having an in-turned flange at their upper
edges, said edge-pieces and side-plates and the middle portion of the pick-bar being
provided with transverse openings, rivets passing through said openings, and a
fastening-bolt by which the lower ends of the side-pieces are connected to the
handle, which is inserted between the edge-pieces and side-plates.
The rectangular openings in the upper portions of the edge-pieces, through
which the pick-bar is passed, are provided with longitudinal and slightly inclined
top and bottom-faces, the edges of which exert a clamping action on the pick-bar.
The edge-pieces are further provided with inclined cheeks at their inner ends that
abut against the inclined ends of the in-turned flanges of the side-plates and against
the inclined ends of strengthening-ribs that are made integral with the side-plates
and serve to reinforce the same.
The invention consists further, of a pick, or other tool, in which the handle-
socket is formed of side-plates, having inwardly-projecting abutments and
box-shaped extensions above said abutments, made integral with the edge-pieces,
said edge-pieces, box-shaped extensions and the middle portion of the pick-bar
being provided with transverse openings, through which the rivets are passed by
which the pick-bar and edge-pieces are connected.
In the accompanying drawings:
Figure 1 represents a side elevation of a pick, with my improved handle-socket
for the same,
Figure 2 is a vertical transverse section on line 2-2, Figure 1,
Figure 3 is a top-view of the pick and its handle-socket,
Figure 4 is a perspective view of one of the edge-pieces of the pick,
Figure 5 is an elevation of one of the side-plates, showing the inner surface of
the same,
Figure 6 is an end elevation of one of the edge-pieces showing the side-plate
in vertical transverse section,
Figures 7 and 8 are respectively a side-elevation and a vertical transverse
section on line 8-8, Figure 7, of a modified form of the pick.
Figures 9 and 10 are respectively a side-elevation and a vertical transverse section
on line 10-10, Figure 9 of still another form of pick,
Figure 11 is a top view of Figure 9, and
Figures 12 and 13 are perspective views of one of the edge-pieces and the box-
shaped extensions of the picks, shown in Figures 7 and 8 respectively.
Similar letters of reference indicate corresponding parts.
Referring to the drawings, A represents a pick-bar or other tool, which is made
of steel or other suitable material and without an opening or eye for the handle,
B B are side-plates, which are applied to the middle portion of the pick-bar,
1 Pass 2+1

page_text: and C C, two edge-pieces, which are provided with rectangular openings in their
upper box-shaped portions, that fit snugly on to the middle portion of the pick-
bar A. The interior upper and lower faces of the openings in the edge-pieces CC
are slightly inclined or bevelled in opposite directions, so that their diagonally-
opposite edges exert a "biting" or clamping action on the middle portion of the
pick-bar, when the lower ends of the edge-pieces C C are bolted to the end of the
handle D. The side-plates B B are extended below the pick-bar A and are provided
with in-turned flanges bb at their upper edges, which flanges extend over the
middle top-part of the pick-bar and abut against each other, as shown clearly in
Figures 2 and 3. The ends of the in-turned flanges bb are slightly inclined or
bevelled, so as to abut against the inclined inner faces or cheeks d of the upper,
bcx-shaped portions of the edge-pieces C. The inner surface of each side-plate B
is further provided with a strengthening-rib 6', and with a strengthening bushing 62
around the rivet-hole at the centre of each side-plate B, said strengthening rib b',
being made arc-shaped, but straight at the ends where it forms contact with the
inclined cheeks d of the edge-pieces C C, so that the cheeks of the edge-pieces C
abut against the inclined ends of the in-turned flanges bb of the side-plates B B, and
against the straight end-portions of the ribs 6¹, by which a high degree of rigidity is
imparted to all the parts of the handle-socket when they are applied to the pick-
bar. The pick-bar A, side-plates B B and edge-pieces C C are provided with
registering or coincident holes for the rivets ff, which are passed transversely
through the same, so as to firmly bind these parts together. The lower ends of
the edge-pieces CC are connected by a fastening-bolt C', which passes through a
hole in the handle D, one end of the bolt being provided with a head, while the
other end is threaded and screwed into the interiorly-threaded end of the opposite
edge-piece C, so that the use of a separate fastening-nut for the bolt C¹ and the
detaching and loss of said nut and bolt is obviated. The shanks of the edge-
pieces C C are made with cavities and transverse ribs, so as to decrease the weight
of the same while still preserving the proper strength.
For lighter pick-bars, the side-plates B B may be dispensed with, and the edge-
pieces CC (see Figures 7 and 12) provided with inwardly-projecting abutments E
having rectangular flanges e, between which the end of the handle D is retained.
The edge-pieces C C are provided above the abutments E with box-shaped
extensions E', which are in line with the box-shaped upper portions of the edge-
pieces C C, and which are provided with holes for the transverse rivets ff, which
pass through the edge-pieces and through the registering or coincident holes in the
edge-pieces and pick-bar, as shown. In some cases it may be desired to connect
the box-shaped extensions of the edge-pieces by an additional rivet with the
middle-portion of the pick-bar. For this purpose, the box-shaped extensions E¹ are
provided at one side with a recess e² (see Figures 9, 10 and 13) and at the opposite
side with a forward-extending lug, that fits into the recess e¹ of the adjacent
box-shaped extension E, said lugs being provided with holes through which and a
hole in the middle portion of the pick-bar is passed a third rivet f so that thereby
the connection of the edge-pieces with the pick-bar is made by three separate
rivets.
By the construction described, a perfectly rigid connection of the handle-socket
with the pick-bar is obtained without providing an eye or opening in the middle
portion of the latter. By the connecting-rivets passing through the edge-pieces and
the middle portion of the pick-bar, the wobbling of the same in the handle-socket
and the playing loose of any of the parts is entirely avoided. At the same time,
the pick can be manufactured at a greatly reduced price, as all the parts of the
bandle-socket can be made of cast-metal, the closely-fitting parts of the handle-
socket preventing the entry of dirt and sand to the pick-bar and forming a
continuous and rigidly-clamped holder for the pick-bar. It is obvious that the
same construction can also be applied to other similar tools, in which the main-
portion of the tool supported in the handle-socket, is considerably strengthened by
the absence of an eye in the same.

page_text: 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. The combination of an eyeless pick-bar, or other like tool, edge-pieces having
box-shaped upper ends for the pick-bar, side-plates having in-turned flanges at
their upper edges, transverse rivets passing through registering or coincident holes
in the pick-bar, edge-pieces and side-plates, a handle inserted into the socket
formed by the edge-pieces and side-plates, and a screw-bolt connecting the lower
ends of the edge-pieces with the handle, substantially as set forth.
2. The combination, with an eyeless pick-bar, or other like tool, of edge-pieces
having box-shaped upper portions for the middle portion of the pick-bar, and
inclined cheeks at the inner ends of said box-shaped portions, side-plates provided
with in-turned flanges at their upper edges, and interior strengthening-ribs
provided with straight ends abutting against the inclined cheeks of the edge-
pieces, transverse rivets passing through registering or coincident holes of the
pick-bar, edge-pieces and side-plates, a handle inserted into the socket formed by
the edge-pieces, side-plates and ribs of the latter, and a screw-bolt connecting the
lower end of the edge-pieces with the handle, substantially as set forth.
3. The combination, with an eyeless pick-bar or other like tool, of edge-pieces
provided with box-shaped upper portions for the pick-bar, inwardly projecting
abutments extending from the shanks of the edge-pieces, box-shaped extensions
above said abutments, arranged in line with the box-shaped upper portions of the
edge-pieces and integral therewith, transverse rivets passing through registering or
coincident holes in the pick-bar and box-shaped portions of the edge-pieces, a
handle inserted into the socket formed by the shanks and abutments of the edge-
pieces, and a screw-bolt connecting the lower ends of the edge-pieces with the
handle, substantially as set forth.
4. The combination, with an eyeless pick-bar or other like tool, of edge-pieces
having box-shaped upper portions for the middle portion of the pick-bar, inwardly-
projecting abutments of angular shape, box-shaped extensions above the abutments
arranged in line with the uppor portions of the edge-pieces and made integral
therewith, the side-walls of the extensions being provided at one side with a recess
and at the opposite side with a perforated lug registering with the recessed
extension of the adjacent edge-piece, rivets passed through the coincident or
registering holes in the pick-bar, box-shaped portions and extensions, a handle
inserted into the socket formed by the abutments and extensions of the edge-
pieces, and a screw-bolt connecting the lower ends of the edge-pieces with the
handle, substantially as set forth.
Dated this 21st day of A nonst 1894
J. G. LORRAIN, M. Inst. M.E., M. Inst. E.E.,
Chartered Patent Agent.