IMPROVEMENTS IN APPARATUS FOR BORING WELLS
Year: 1885

page_text: I CHARLES CHAPMAN, of the Broughton Road Works, Salford, Lancashire,
Artesian Well Engineer, do hereby declare the nature of said Invention for
IMPROVEMENTS IN APPARATUS FOR BORING WELLS, to be as follows:-
My invention relates to boring machines used for making artesian wells for
improvements in which Letters Patent No 7067 were granted to me on the
1st May 1884 and for farther improvements in such machines I applied for Letters
Patent on the 20th August 1884 N° 11,457, the object of my present Invention being
the same as in each of the aforesaid, namely, to provide an improved device for
rotating the drill or boring bar that will ensure its positive rotation.
According to my present Invention instead of having fixed on the boring bar two
spiral or helical ratchets, one formed with a right and the other with a left hand
spiral as described in my Provisional Specification No 11,457 A.D. 1884 I now
propose to employ only one spiral or helical ratchet preferably fixed near the top of
the boring bar, and in place of the other or lower spiral ratchet I. employ a plain
ratchet the teeth of which are parallel with the boring bar and set in the same
direction as the spiral ratchet.
I secure to the bow by which the boring bar is lifted a block or boss on which
are fitted and secured two plates or sleeves for carrying the pawls that act upon
both the ratchets; the boring bar passes, or may pass, through the middle of this
block and I prefer to fit on the bar between the two ratchets a hard metal bush on
which the block is free to slide.
When the bar is dropped the pawls that engage with and slide on the lower or
plain ratchet cause the suspension rope connected to the bow to twist and when the
bar is lifted by the sliding block bearing against the upper or spiral ratchet fixed
on the bar the rope and the pawls that engage with and slide on the upper ratchet
cause the bar to turn so that when it is again dropped the cutters.strike in a fresh
place.

page_text: Improvements in Apparatus for Boring Wells.
I CHARLES CHAPMAN, of the Broughton Road Works, Salford, Lancashire,
Artesian Well Engineer, do hereby declare the nature of said Invention for
IMPROVEMENTS IN APPARATUS FOR BORING WELLS, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―
My invention relates to boring machines used for making artesian wells for
improvements in which Letters Patent N° 7067 were granted to me on the
1st May 1884, and for further improvements in such machines I applied for Letters
Patent on the 20th August 1884, No 11457, the object of my present Invention
being the same as in each of the aforesaid, namely, to provide an improved device
for rotating the drill or boring bar that will ensure its positive rotation.
According to my present Invention instead of having fixed on the boring bar two
spiral or helical ratchets, one formed with a right and the other with a left hand
spiral as shown in the Drawings and described in the Specification to my Letters
Patent No 11457 A.D. 1884 I now propose to employ only one spiral or helical
ratchet preferably fixed near the top of the boring bar and in place of the other or
lower spiral ratchet I employ a plain ratchet the teeth of which are parallel with
The boring bar and set in the same direction as the spiral ratchet.
I secure to the bow by which the boring bar is lifted a block or boss on which
are fitted and secured two plates or sleeves for carrying the pawls that act upon
both the ratchets; the boring bar passes or may pass through the middle of this
block and I prefer to fit on the bar between the two ratchets a hard metal bush on
which the block is free to slide.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying Sheet of Drawings, reference being had to
the figures and letters marked thereon.
Figure 1 is a side view of the upper part of a boring bar fitted with two ratchets,
one a spiral or helical ratchet, and the other a plain or straight ratchet according to
my Invention. Fig. 2 is plan of the same with the upper part of the bow
removed. Fig. 3 is a front view of Fig. 1. Fig. 4 a sectional plan on the line A B.
Fig. 3. Fig. 5 a longitudinal section of Fig. 3. and Fig. 6 a sectional plan on the
line C D. Fig. 3.
In this arrangement, a is the spiral ratchet and 6 the plain or straight ratchet,
the teeth of which are set in the same direction; the ratchets a and b are both
fixed on the boring bar c which is suspended as usual by a rope (not shown)
connected to the bow d. The bar c passes preferably through a bush h of brass or
other suitable metal on which is fitted and free to slide a block or boss e which is
secured to the bow d and carries two plates or sleeves e¹ which carry the four spring
pawls ff and g g for the ratchets a and b respectively.
When the bar c is dropped the pawls g g that engage with and slide on the plain
ratchet 6 cause the pawis ff to move into another tooth and the suspension rope
connected to the bow d to twist and when the bar a is lifted by the sliding block e

page_text: bearing against the underside of the ratchet a, the rope and the pawls ƒ ƒ sliding
on the spiral ratchet a cause the pawls g g to move into another tooth and the bar c
to turn so that when it is again dropped the cutters (not shown) secured to the
lower end of the said bar strike the ground in a fresh place.
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 apparatus for boring wells, the combination with a spiral or helical ratchet,
such as a, of a plain or straight ratchet, such as b, substantially in the manner and
for the purposes herein described and as illustrated by the Drawings annexed.
2. The combination with the boring bar c of the spiral or helical ratchet a,
and the plain or straight ratchet b, both fixed on the said bar and actuated by
pawls attached to the bow d, which bow is connected to the suspension rope,
substantially as herein set forth for the purposes specified.