Masonry Magazine October 1964 Page. 23
Roto-Hammer
Skil Corp. has announced a
new Roto-Hammer (model 728)
for making holes in masonry
from 5/32 in. to 2 in., and a new
Demo-Hammer (model 729) fod
heavy-duty demolition work.
Delivering 2900 blows per min.
ute at 500 rpm's, the hard-hitting
model 28 Roto-Hammer, priced
at $259.50, will ouperform any
other hammering drill or rotating
hammer costing up to 590 more,
according to Skil.
This new Roto-Hammer makes
Skil's line of five power rotated
hammers the most complete avail
able, and all have the three-way
action that allows: 1. hammering
with power rotation, 2. hammer
ing without power rotation and 3.
drilling without hammering.
Skil says the model 728's ability
to hammer while power rotatin
a carbide bit makes it the lowest
cost way to drill masonry. The
tool may also be used as a ham
mer for chiseling, chipping, and
demolition work and as a 1/2 in.
drill.
Other features of the Roto-
Hammer include Skil's Super
Burnout Protected motor with
silicon rubber shock absorbers,
accessories with large diameter
shanks to minimize breakage and
promote long bit life, heavy-duty
spring-mounted tool retainer, elec
tro-pneumatic drive with high-
velocity air filter system, heat-
treated steel gears and a'uminum
piston, hardened alloy steel striker
with self-adjusting rings that com-
pensate for wear, and long-life
brushes.
The model 29 Demo-Hammer
delivers 3000 blows per minute
and is priced at 5249.50, making it
the lightest (14-1/2 pound), and
most powerful hammer in its
class, according to Skil.
Similar to the model 728 Roto
Hammer, the model 729 has all of
the same features except power ro-
tation. It is designed for heavy
demolition work, chiseling, chip
ping, slotting, channeling, surfac
ing concrete, removing old mor-
tar, descaling, rust removal and
wood gouging.
Other Skil Roto-Hammers are:
model 706 for making 5/32 in. to
3/4 in. holes in masonry ($149-
50): model 1706;, similar to mod
el 1706 except it is double insulat
ed to make grounding unnecessary
($169.50) model for making
5/32 in. to 1-1/2 in. holes ma
sonry ($239.50), and the model
736 for making 1/2 in. to 3-1/2
holes in masonry (5349.50).
A larger, even more powerful
Demo-Hammer, model 737, is
available for heaviest duty ham
mering (5325).
Both the model 728 Roto-Ham-
mer and the model 729 Demo
Hammer, which come with de
tachable side handle and steel
carrying case, are available im-
mediately from, distributors. For
more information write:
Corp., 5033 Elston Ave., Chicago,
Illinois 60630.
New Brochure
A new fully-illustrated 18-pane
brochure on installation details
for reinforcing of masonry walls
has been issued by Dur-O-wal
National, Inc.
This new manual is designed to
help the entire building team-
architect, contractor and mason
in the specific use of a variety
of construction situations involv
int masonry wall reinforcing.
Various types of finishes and
sizes of Dur-O-wal brand rein-
forcing are illustrated.
Wall placement, splices, spacing
in the wall uses at corners, in
cavity and composite wals, re-
turns and offsets-application at
wall intersections, with control
joints, at chases, jambs, piping
enclosures, buttresses, counter-
forts and parapets, are all cov
ered in the brochure.
The eighteen fold-out pates are
fully illustrated with detailed in-
stallation drawings.
Dur-O-wal masonry wall rein-
forcing has received code approv
als from the Southern Standard
Building Code Congress, the
Building Officials Conference of
America and the International
Conference of Building Officials.
The new brochure, Technical
Bulletin No. 64-1 on Installation
Details, is available without charge
from Dur-O-wal. National, P. O.
Box 150, Cedar Rapids, Iowa.
Snowplow
The Prime-Mover M-15B Pow
ered Buggy features a snowplow
attachment for use at construc-
tion and industrial sites. It is en-
gingered to minimize side thrust
and to prevent snow packing on
the moldboard, and performs
equally well on wet or dry snow.
The four foot blade can be
quickly dropped off, permitting
the Prime-Mover to resume its
normal material handling work.
When the plow is in use, the 10
cu. ft. bucket can be filled with
sand or salt for spreading on
icy areas.
Mr. Heat Co.
Mr. Heat Company of St. Louis
has been formed to manufacture
a new line of portable space
heaters.
These new heaters, called "Mr.
Heat units, are available in three
models, the H-88 (90,000 B.T.U.
class), the HT-155 (158,000 B.T.
U. class) and HT-245 (250,000
B.T.U. class).
Mr. Heat units are equipped
with automatic thermostats (op
tional on H-88) and feature auto-
matic purging for complete fuel
combustion. Fuel capacity ranges
from 12-15 hours depending on
the size of the heater. Motor and
burner units are Underwriter Ap
proved. All units are equipped
with semi-pneumatic tires and as a Universal masonry saw, is
steel carrying handles.
ideal for use when single pass
Models HT-155 and HT-245 block cutting or other deep cut-
have a blower intake on top of ting applications are the prime
the housing to provide a separate
supply of air for greater circula-
tion of heated air.
Mr. Heat Portable Space Heat
ers burn kerosene or No. 1 fuel
oil and operate on standard 110
Volt, AC current. They con be
used anywhere a temporary sup
ply of heat is needed.
For more information, a demon
requisite. An outstanding feature
of the SM-300 is the exclusive,
adjustable blade guard which can
be quickly adjusted for use with
23 inch or 14 inch blades. It is
possible to pre-set the blade guard
to the exact blade size being used.
No excess blade guard hides the
operator's view or bumps the con
vayor cart or material, even when
cutting with worn blades
Additional information on the
Clipper Hi-Speed 14 inch Model
stration, or the name of your SM-314 or the Universal Model
nearest Mr. Heat dealer, contact
Mr. Heat Company, 3700 Forest
Park Avenue, St. Louis, Missouri
63108.
Improved Saws
The Clipper Manufacturing
Compony of Kansas City, Mo,
has announced several improve
ments to its line of Surer Matic
masonry saws which include the
Hi-Speed Model SM-314 and the
Universal Model SM-300.
According to Clipper, world's through aluminum extension lad-
largest manufacturer of masonry ders. Popu'ar aluminum folding
and concrete sowing and drilling ladder scaffolds and stairway
equipment, the new Suned Matic types are described, as is "Trou-
models offer greater flexibility ble Saver Sectional Steel Scaf-
than ever before in cutting all ma folding, widely used in construc
sonry and refractory materials in tion work. Other illustrated pro
cluding glazed tile, face brick, ducts include "Trouble Saver"
concrete blocks, limestone and Rolling Safety Ladders; "Tube
Lox" Scaffolding; "Gold Medal"
firebrick.
Among the many new improve Safety Swinging Scaffolds and
ments which are common to both PSCo. Work Stands and Scaffolds
the SM-314 and the SM-300 is for aerospace and other special
the Sta-Level Cutting Head of project application.
pressure cast aluminum with im From Patent Scaffolding Co.,
proved linkage that allows the Division of Harsco Corporation,
head to stay completely level 18-21 12th Street, Long Island
while cutting any size material. City, New York 11101.
Tht Hi-Lo Control Wheel has
been enlarged and the thread sys
New Folder
tem changed for even faster, more
effortless raising and lowering of
the cutting head.
Placing vermiculite insulating
concrete by machine is the subject
Other new features include of a folder titled "Machine Place-
special motors with overload ment," issued by the Vermiculite
Institute. By this method, large
protector, cast aluminum cart,
pressure bearing equalizer og collarim sprinz, line bor areas in record roof time. deck Jobs can with be limited
protector, and patented water ap
plication.
access and decks with curved and
irre ular surfaces are handled
easily.
The Clipper Hi-Speed 14 inch
model SM-314 is designed to op
crate at the best shaft speed for
14 in. blades offering maximum
blade life in the most efficient. A.L.A. File Nos. 37-B-2 and 4-E-
easy to operate manner.
Procedures for sampling the
concrete and for determining dens
ities and compressive strengths
are given. Illustrated with photos.
13. Write Vermiculite Institute,
The SM-300 model, designated 208 South LaSalle St., Chicago 4.