New or Improved Appliances for Transmitting Power from Motors to Rock Drilling and similar Machines.
Year: 1896

page_text: Date of Application, 17th Feb., 1896
Complete Specification Left, 17th Nov., 1896-Accepted, 19th Dec., 1896
New or Improved Appliances for Transmitting Power from Motors
to Rock Drilling and similar Machines.
I, FRANCIS JOHN HENRY LASCELLES, Mining Engineer of Rosedale, Pickering in
the County of Yorkshire, do hereby declare the nature of this invention to be as
follows:-
This invention relates to new or improved appliances for transmitting power from
motors to rock drilling and similar machines.
To effect my purpose I propose to form a collar or flange on the driving or motor
shaft and to hinge or equivalently connect therewith the flange or collar or bracket
of or connected with a transmitting shaft. The shaft may work or rotate within if
desirable a tube or cover and the shaft ends will be provided with toothed gear
wheels having semi-circular or curved teeth so adapted that the several lengths of
connecting shafting can be varied as to their angles or directions without throwing
the teeth arranged as described out of gear with each other the hinged connections
on the tubes or covers or brackets or shells connecting the several lengths of
shafting enabling any required direction to be readily assumed by the shafting in
working.
Thus a part of the shafting transmitting power may lie at or nearly at right
angles to another part or be otherwise angled or rectilineal there with and there may
be as many of such jointings and gear wheels as may be necessary to suit different
circumstances.
At the motor where the first flexible connection in the shafting occurs and attached
thereto there may be a special retaining ferrule adapted to support the shell-shaped
or hollow bracket or bearing piece through which the motor shaft passes so as thus to
relieve the shaft itself of the weight due to its attachment with the dependent or
transmitting gear. The power from the motor can thus be transmitted to any
required distance through any required number of transmitting shafts to the spindle
of the drill or other machine required to be driven.
Further on or in connection with the motor frame or bed plate there may be
arranged a lifting and lowering screw spindle or equivalent device driven by mitre or
equivalent gearing by or from the motor and adapted to raise or lower by suitable
brackets or nuts a table or frame for carrying or supporting part of the flexible
transmitting shafting hereinabove described at any required level.
By such a device friction may be greatly reduced and increased power may be
proportionately transmitted.
D
+000

page_text: New or Improved Appliances for Transmitting Power from Motors
to Rock Drilling and similar Machines.
I, FRANCIS JOHN HENRY LASCELLES, Mining Engineer of Rosedale, Pickering in
the County of Yorkshire, 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 appliances for transmitting rotary power from an electric
or other kind of motor through any. number (within reasonable limits) of short
lengths of shafting to rock drilling or similar machines.
According to my invention all the transmitting shaftings are enclosed in protecting
tubes or casings which are hinged together at each end by pins uniting lugs cast
upon hollow or shell-like end fittings fixed upon the outer tubes.
The shafts are all geared together by mitre wheels with semicircular or curved
teeth adapted to maintain the mesh with one another through an angle of more or
less than 90°. The mitre wheels are keyed fast upon the transmitting shafts within
the aforesaid end fittings and all the parts are so arranged that the shafts can be
varied as to their angles or directions without throwing the teeth out of gear with
each other and special provision is made for relieving weight upon the motor shaft
and for taking up strains and stresses upon the shafting and gear.
In further explanation of my invention, I will refer to the accompanying drawings,
in which
Figure 1 is a general elevation showing the whole arrangement.
Figure 2 is an elevation, on a larger scale, of the outer end of motor shaft (shown
in section) and two intermediate transmitting shafts shown at right angles to each
other and coupled to another at an inclination.
Figure 3 is a longitudinal section of the horizontal part of the shaft shown in
Figure 2 with casing and detail of end fittings.
Figures 4 and 5 are details hereinafter explained and
Figures 6 and 7 are respectively a front elevation and a half transverse section and
elevation of one gear wheel on an enlarged scale.
Similar letters and numerals of reference indicate like parts in all the figures.
In Figure 1, M is the motor truck and N a shaft supporting wagon.
1 is the main
or motor shaft, 2, 3, 4 and 5 intermediate lengths of flexibly connected rotary
shafting, 6 the drill shaft, 7 the drill, 8 its adjustable supporting standard with
brake box 9, 10 are the running rails and 11 the face of the coal or material to be
worked.
Proceeding now to the details of my invention, D, Figures 1 and 2, is a strong
collar or flange formed on the outer end of the casing or bearing G of the motor
haft 1 as illustrated; to this flange is firmly bolted a special retaining ferrule or
hollow flange B, securing and entirely supporting the back flange and body of a
bearing a² of the form shown which is in one with the first hollow shell-like end
fitting A, shown in front elevation in Figure 4; by this arrangement, the shaft 1 is
relieved of the weight and strain due to the succeeding transmitting shafts, and
between the bearing a² and the shaft 1 a small clearance space a' is left to abolish
friction upon the shaft. L are lugs formed upon the fitting A to which are pivoted
or hinged by pins P similar lugs L¹ on the end fitting A¹ fixed to the tube or
casing C of the second shaft 2. Upon the outer end of the shaft 1 is fixed the mitre
gear wheel W, which gears with a correspondingly shaped gear wheel W' fixed
upon the end of the shaft 2 within the end fitting A' as clearly shown in Figures 2
and 4 and with reference to Figure 5 which is a front view of the corresponding
parts at the end of the shaft 3.

page_text: Similar pivoted fittings a a¹, though not necessarily of equal strength, and gear
wheels wo are provided at the adjacent ends of each pair of following
shafts 2-3, 3-4 and so on.
In the design of the gear wheels, shown best in Figures 6 and 7, each tooth is
formed with semicircular ends and tapering sides so that no matter at what angle
within wide limits the one wheel may be with the next at any time the mesh is
maintained and the gear remains operative; thus a part of the line of shafting
transmitting power may be at or nearly at a right angle to another part or may be
otherwise angled or rectilineal therewith, the hinging at P admitting of variation of
direction as required, and there may be as many such jointings and gear wheels as
may be necessary to suit different circumstances."
The rotary motion and power of the motor may thus be transmitted through any
required number of shafts to the spindle of the drilling or other machine required to
be driven.
The drill is fixed in the usual way to the last length of this flexibly connected
rotary shafting and it may be provided with a progressive worm as at F, Figure 1,
and the usual standards and fittings these forming no part of my present
improvements.
For the purpose of facilitating transit, and working conditions without straining
the flexible connections, I find it convenient, especially where long lengths of flexible
shaftings are required between the motor and the drill, to employ a supporting wagon,
such as N, and this may be provided with handy lifting and lowering gear for the
shafts and its sides made to turn upwards and constitute a closed wagon for stowing
all the parts for transport.
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. In flexible power transmitting appliances such as above referred to wherein a
continuous series of rotary shafts are employed, the use and arrangement of tubular
casings for the separate shafts each provided at its ends with hollow fittings pivoted
together in pairs, mitre gear wheels on each shaft partly enclosed in said end fittings
and a special ferrule (B) retaining and supporting the bearing of the first end
fitting (A) and relieving weight upon the motor shaft all substantially as and for the
purposes above described and illustrated in the drawings.
2. The combination of the special retaining and supporting ferrule (B) and
bearing (a) of the fitting (A) substantially as described and illustrated.
Dated this 10th day of November 1890.
For the Applicant,
J. C. CHAPMAN,
3 St. Nicholas' Buildings, Newcastle-on-Tyne, and
70 Chancery Lane, London, W.C., Chartered Patent Agent.