Dovetailing Machines.
Year: 1885

page_text: Dovetailing Machines.
I JOHN ANDERSON, of 38 Elswick Row Newcastle on Tyne Machine Maket
do hereby declare the nature of my invention for IMPROVEMENTS IN GENERAL
CABINET MAKERS AND AUTOMATIO DOVETAILING MACHINES FOR STRAIGHT AND
WAVE MOULDINGS, THICKNESSING, MORTICING, TENNOING, SAWING, PLANING,
IRREGULAR MOULDINGS BORING, TRENCHING, CUSPING AND DOVETAILING to be as
follows:-
This Machine is designed to meet the requirements of Cabinet and Joinery
works, specially where space and power is limited, as one, two, or three operations
can be performed at the same time, and consists of suitable frame, and two
revolving spindles, fitted to receive any cutter to work either in horizontal or
vertical position, mounted on slides with suitable adjustments. Also set of feed
rollers, carriers, cams, and levers for the various operations. When Dovetailing
the wood is secured at right angles in a carrier mounted on the moulding bed,
and propelled forward at regular intervals, while the cutter is raised into the
wood and lowered at each consecutive cut, in either fine or heavy work.

page_text: Improvements in General Cabinet Makers and Automatic
Dovetailing Machines.
JOHN ANDERSON, 38 Elswick Row Newcastle upon Tyne, Machine Maker I do
hereby declare the nature of my invention for IMPROVEMENTS IN MACHINES FOR
STRAIGHT AND WAVE MOULDINGS, THICKNESSING, MORTICING, TENNOING, SAWING,
PLANING, IRREGULAR MOULDINGS BORING TRENCHING, CUSPING AND DOVETAILING
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
This Machine is designed to meet the requirements of Cabinet and Joinery
Works specially where space and power is limited, as one, two or three operations
Can be performed at the same time, and consists of suitable frame, and two
revolving spindles, fitted to receive any Cutter to work either in horizontal or
vertical position, mounted on slides with suitable adjustments. Also set of feed
roolers, carriers, cams, and levers, for the various operations. When Dovetailing,
the wood is secured at right angles in a carrier mounted on the moulding bed
and propelled forward at regular intervals, while the cutter is raised into the
wood and lowered at each consecutive cut in either fine or heavy work.
I will now proceed to explain my said Invention more in detail by reference to
letters and figures on the accompanying drawings.
Fig. 1. is a front elevation shewing section of my improved Dovetail Carrier and
working parts in connection with the same, as also slides and Cutter spindles.
Fig. 2. is a side vew shewing parts as above, also position of feed roolers used
when thicknessing &c.
Fig. 3, is a plan shewing spindle carriages and slides also feed roolers and
moulding bed.
A is the driving shaft, actuated by bevil gearing O. and worm B. on shaft D.
suported in suitable bearings, and has a cam E. on one end, operating through
rooler G. the arm F. which has a stud H. adjustable by screw H 1. for the purpose
of giving longer or shorter throw to the Cutter, for various thickness of material
when dovetailing. Stud H acting on cross bar I bolted onto vertical slide J. to
which the spindle carriage K is secured, thus giving the revolving Cutter vertical
motion into the wood L to be operated in the carrier M. which is held in position
during the cut by pawl V. pressed into the devision rack Y. by spring V1. The
carrier M has horizontal motion on moulding table N. guided by the groove O. and
fence P. which also acts as a stop to place the horizontal material L. against, the
vertical piece L is placed with its end onto the first and against the plate Q, and
held firmly by screws and lever clamps M 2. as shewn in fig. 1, and operated simul-
taneously. Motion is given to the carrier at proper intervals by cam R. on shaft A.
in its revolution coming in contact with crank arm S. pivoted at S 2. it in turn
operating through link S 1. the lever T. with pawl U. At the same time pawl V.
is released from the rack Y. by mean of raised part W on the bevil wheel C. and
arm X. with rod X 1. as shewn in Fig. 2, and the carrier is moved forward the
required distance when the pawl V again falls into the rack. As the return of

page_text: pawl U. is caused by spring Z. on lever T it may be checked by stop T 1. at either
one or more notches according to the size of dovetail required.
When used for thicknessing and mouldings remove the Dovetail Carrier and
Cutter, and place an ordinary moulding block with cutters on the spindle K 1.
Also feed roolers in the journals on lines 1-2, these roolers are rotated by spur
pinion 3 and wheels 4, driven from pully D1. Fig. 1. to D 2. Fig. 3. Wave motion
is given to the moulding cutter in the same manner as when dovetailing by
removing can E and substituting another of any desired pattern.
For tennoing, place an ordinary sliding frame on bracket A 1. Fig. 1. Also
extentions with cutter blocks screwed onto the spindles 5 and 6. and revolving in
opposite directions, and operated as in ordinary tennoing machines. •
For surface planing, remove tennoing appliances and replace by planer block
and knives on spindle 5. also 2 adjustable half tables on bracket A 1. of ordinary
pattren. Circular may also be worked on spindle 5.
For morticing, place a suitable carrier on the moulding table N. and connect it
by a link to lever T. and traverse back and forward by means of a link connecting
cam R and arm S, the connection with cam E being removed while a revolving
morticing tool is held in spindle K 1. and the material brought up to it by table N.
sliding on bracket N 1, and the screw N 2 worked either by hand or selfact in
connection with lever T.
For Irregular Mouldings, Trenching, Cusping &c one or both spindle carriages
may be unscrewed from the horizontal, and placed in vertical position on lines 7
and 8 up through the table in the usual way.
Having now particularly ascertained and described the nature and object of my
said Invention and in what manner the same is to be performed, I declare that
what I claim is in a dovetailing machine
1st Cam E with arm F. adjustment H. crosshead I in combination with slide J.
and spindle K 1. substantially as and for the purpose set forth.
2nd The carrier M with screw and lever clamps M 2 in combination with fence P.
substantially as and for the purpose set forth.
3rd Cam R crank S. lever T. in combination with bed N. and bracket N 1.
substantially as and for the purpose set forth.