IMPROVEMENTS IN MORTISING MACHINES
Year: 1885

page_text: I, JOHN BLOMFIELD HAMOND of Portwood, Stockport, in the county of Cheshire,
Engineer do hereby declare the nature of my Invention for IMPROVEMENTS IN
MORTISING MACHINES to be as follows:-
་
This invention relates to a wood mortising machine in which a twist or other
suitable drill is placed between the mortising tools, and which is so arranged as to
bore a hole in the wood block while the mortising tools on either side of it receive
the ordinary reciprocating motion.
In carrying out my invention, I arrange the shaft which gives the reciprocating
motion to the mortising tools preferably in bearings on the top of a cast iron frame.
This shaft has secured on it a double-throw crank which, through the connection of
suitable links or blocks working in vertical guides formed in the frame of the
machine, gives an alternate reciprocating movement to two mortising tools or
chisels. Instead of the double-throw crank I may make use of other suitable
mechanical means for communicating this reciprocating motion.
I mount vertically on the frame a drill spindle, carrying at its lower end a twist
or other suitable drill or cutter which is made to work between the two mortising
tools and to bore a hole in the wood block and clear out the rough parts left by
the mortising tools. The upper part of the drill spindle is preferably connected
with its lower part by means of a universal joint, and is thus able to be placed at
an angle, so that a pulley secured to it may be kept clear of the parts giving
motion to the reciprocating tools. The drill spindle is driven by means of cross
belts from the crank-shaft before mentioned.
I make the mortising tools with a channelled or curved section on the side
adjoining the twist drill or cutter, so that they may work close up to it and cut
away the portions of wood left by the drill.
A traversing motion is given to the table of the machine, on which the wood
block is placed, in the usual manner.

page_text: Improvements in Mortising Machines.
I, JOHN BLOMFIELD. HAMOND of Didsbury in the county of Lancaster late of
Stockport, 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:―
This invention relates to a wood. mortising machine in which a twist or other
suitable drill is placed between or adjoining the mortising tool or tools, the drill
being intended to bore a hole in the wood block while the mortising tool or tools
alongside of it are being operated in the usual manner.
In order that my invention may be readily understood I have illustrated it in
the accompanying sheet of drawings where
Fig. 1 is a front elevation of the machine, Fig. 2 is a side elevation, Fig. 3 is the
plan view.
Fig. 4 is an enlarged view of part of the front of the machine shewing the drill
and mortising tools in their relative positions.
Figs. 5. 6 are the side and front views of the universal joint connection used to
connect the drill spindle to the drill. The machine here illustrated is arranged for
the use of two mortising tools but I may, if preferred, use only one.
In carrying out my invention I arrange the driving shaft A preferably in
bearings B B on the top of the frame C. The shaft A has secured to it at one end,
by any of the usual methods, a double throw crank D, from which an alternate
reciprocating motion is given to the slides E E. The top ends of the slides E E are
connected to the double throw crank D by suitable links F F, and the mortising
tools GG are bolted or secured to the bottom ends in any usual or convenient
manner. Instead of the double throw crank, I may make use of other suitable
mechanical means for communicating the reciprocating motion to the slides E E
and tools G G.
I mount vertically in the frame a drill spindle H having secured to its lower end
a twist or other suitable drill or cutter K. The drill H is so placed as to rotate in
the space between the two mortising tools G G, or if one mortising tool only is
used, the drill is placed so as to rotate alongside of it. The mortising tool or tools
are preferably made with a channelled or curved section on the side adjoining the
drill or cutter K so that they may work close up to it and cut away the portions
of wood left by the drill.
The drill spindle is driven from a pulley L secured to its top end, round which
passes an endless belt receiving motion from the pulley M on the driving shaft A.
Instead of using pulleys and belts for giving motion to the drill spindle, I may, if
found convenient, make use of geared wheels or other mechanical means suitable
for the purpose,
I preferably construct the drill spindle H in two parts as shewn drawn to an
enlarged scale in Figs. 5. 6. The driving pulley L or the gear wheel, if such be
used, is secured to the end of the spindle N, and the drill K is screwed or otherwise
fastened into the socket O. The connection between the upper spindle N and the
socket is made by means of a universal joint P. By this means the upper part
of the drill spindle N may be placed on an angle, so that the pulley or gear wheels
f

page_text: driving it may be thrown back out of the way of the reciprocating parts E E, F F.
The socket O to which the drill K is secured revolves in a bearing R secured to
the frame C of the machine.
Instead of the universal joint connection, I may make use of flexible shafting,
constructed of coiled steel wire, as a drill spindle to connect the driving pulley and
the drill, by which means the drill spindle may be placed on an angle for the
purpose just described.
The details of the frame C and of the other parts of the machine are made in the
usual or any convenient manner. The table S on which the wood block is placed
while being mortised is able to be traversed laterally and endways of the machine
any distance as required by the length or width of the mortise, by means of alides
actuated by the usual screw, or rack, or other motion, and the feed is put on by
raising the table upwards into contact with the drill K and the reciprocating
mortising tools G G. This is effected by means of a screw and block motion, or
by means of pressure applied to the foot lever T, communicating with the table S,
or in any usual and convenient manner. Power for driving is applied preferably
to the belt pulleys V on the end of the driving shaft A.
I wish it to be understood that I do not confine myself to working the mortising
tools and drill in a vertical position, but that I may work them in a horizontal, or
diagonal position, in which case the frame C will be constructed in a suitable
manner for that purpose, but the arrangement of the working parts constituting
this invention will be similar to that herein before described.
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 :-
1. The application to mortising machines of a rotating drill or cutter placed
between or alongside the reciprocating mortising tool or tools, in the manner, and
for the purpose substantially as herein illustrated and described.
2. The universal joint connection between the upper and lower parts of the
drill spindle, or alternatively, the construction of the drill spindle of flexible
shafting, for the purpose of throwing the drill spindle on an angle, in combination
with the arrangement of drill and reciprocating mortising tools as herein described.
Dated this ninth day of March 1886.
CHARLES WATCHURST,
Agent for the Applicant.