Year: 1888

page_text: I SAMUEL SEARLE HAZELAND of the Parish of St Sampsons in the County of
Cornwall Experimental Machinist do hereby declare the nature of this invention to
be as follows
The object of this Invention is to make cheaper Woodworkers Plane Irons and
at same time enable users of them to avoid all the labour of grinding and as much as
To this end I make these Plane Irons of
possible of the labour of whetting them
Blacksmiths worn out rasp files or their equivalent welded to wrought Iron of about
1 inch to 1 inch square thereafter hammering out the welded together Steel & Iron
aforesaid as thin as is conveniently possible and securing & using it as soon as it has
been cut to size, tempered, reflattened, polished, filed to bevel & whetted, between
carpenters Plane & face irons or their equivalent The Steel & Iron should be so
welded together that it may when hammered out as aforesaid leave one side wholly
covered with Steel of a nearly 40th of an inch or less in thickness as it is con-
veniently possible to bring it and the other side wholly covered with wrought Iron
of a preferably greater or much greater comparative thickness -I preferably heat the
metal when welding and beating it out in charcoal fire and hammer it by means of
a Tilt Hammer & metal block beneath each of which should be made dead smooth and
level on the side where it strikes or presses the material operated upon & each of which
should be as large strong & heavy as is conveniently possible-I find that the greater
proportion of wrought Iron I put in these plane Irons the less the labour in whetting
them and that by means of the wrought Iron in them I am enabled to without breaking
permanently reflatten the plane irons after they have warped from shape in the
tempering
11 10th of Anml 1888

page_text: I SAMUEL SEARLE HAZELAND of the Parish of St. Sampsons in the County of
Cornwall Experimental Machinist 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
The object of this Invention is to make cheaper Woodworkers plane irons and at
same time to enable users of them to avoid all the labour of grinding and as much as
possible of the labour of whetting them To this end I make these plane irons of black-
smiths worn out rasp files or their equivalent welded to wrought iron from about of
an inch to 1 inches square thereafter himmering or rolling out the welded together cast
steel & iron afores ud as thin as is conveniently possible & securing & using it between
carpenters plane & face irons or their equivalent The steel & iron should be so welded
together that it may when hammered or rolled as aforesaid leave one side wholly
covered with steel of is nearly 40th of an inch or less in thickness as it is con-
veniently possible to bring it & the other side wholly covered with wrought iron of
a preferably greater or much greater comparative thickness Since filing my Pro-
visional Specification in respect of this Invention I find this metal can be rolled at
the mills better and cheaper than I can hammer it out After rolling I cut the metal
into slips about of an inch wide & about 12 inches long & heat a quantity of said
slips in a wrought iron tube when evenly as hot as I can get them in a large fire grate
made to suit the tube aforesaid I quickly tip out the lot into water varying from
about 50 to 70 degrees of temperature according to the hardness of steel preferred
After these slips are reflattened by bending & hammering & have been ground on the
steel face I cut them into the lengths required for woodworkers plane irons of any
convenient width In the accompanying Drawings I have shown the method of
securing these knives-Fig 1 shows i carpenters plane non half size the line at A
being the end of the grinding bevil
B B are
tapped holes into which the con-
necting screws D one of which is shown in Fig 3 take-in Fig 2 A shows the end
of the hammered down or ground out bevil of the face iron & C°C the 2 slots through
which the connecting screws DD loosely pass before screwing into the threaded
holes in the plane iron-Fig 3 shows at D one of the mushroom headed screws con-
necting plane & face iron & holding securely between them the thin plane knife E-
The face iron across its width in line shown at F must be sufficiently hammered down
so that the face iron shall pinch tightly on the back end of the thin knife as well as
in front as this will prevent the said knife from chattering when in use The slots in
face iron shown in Fig 2 enable the thin knife to be held sufficiently in front of the

page_text: thick irons for whetting & permit of the necessary adjustment of the face iron to suit
the thickness of shaving required
Having now particularly described & ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what I
claim 15
1-For Woodplanıng-knives made in or substantially in the manner described
2-For Woodplaning-knives secured in or substantially in the manner shown &
described