Interpretation ID: nht68-1.10

DATE: 04/11/68

FROM: AUTHOR UNAVAILABLE; William Hadden, Jr.; NHTSA

TO: House of Representatives

TITLE: FMVSS INTERPRETATION

TEXT: Thank you for your letter of March 16, 1968, in reference to an inquiry from Mitts and Merrill, Incorporated, concerning the application of the Federal Motor Vehicle Safety Standards to their brush chipper.

The brush chippers as shown in the brochures you enclosed are less than 80 inches in width; therefore, Motor Vehicle Safety Standard No. 108 does not apply at present. However, after January 1, 1968, Table No. III of Motor Vehicle Safety Standard No. 108, will apply to passenger cars, multi-purpose passenger vehicles, trucks, buses, trailers and motorcycles.

We are enclosing a copy of the Federal Motor Vehicle Safety Standards as per your request and trust they assist you in this matter.

Sincerely,

mitts & merrill, inc.

March 14, 1968

Honorable James Harvey, M. C.

Sir:

REFERENCE: Your Letter of March 6 and Wire of March 11 1968

We have studied the Motor Vehicle Safety Act of 1966 and also reviewed your wire.

With regard to the above Act, the Federal Safety Standards were not sent with it. The establishment of these standards is stated in the Act under Title I, Section 103, paragraph (h) concerning issuance of Federal Safety Standards and subsequent revised standards. Please have copies of these standards sent(Illegible Word) immediately or advise at once where we may obtain same. We must know if our Brush Chipper falls under this Act.

Concerning your wire, enclosed are two copies each of our specification sheets and outline drawings of our Brush Chipper. You will note that no models are over 80" wide which will not bring them under the trailer lighting standards. Our units do require license plates.

Thank you for your efforts in our behalf.

Very truly yours,

Norman E. Hess -- Chief Engineer

enclosures

MITTS & MERRILL CHIPPER SPECIFICATIONS

MODELS -- M7, M8, M9

TRAILER UNITS -- SERIES 160 (16 INCHES) TRAILER: Frame All tubular steel, welded construction. Draw Bar Pintle eye-standard. Ball and socket-optional. Axle Coil spring torsion type, 2" O.D., tubular construction - 61-1/2" track. Wheels Two (2) - Semi-drop center. Tires Two (2) - 15" 8-ply rated - commercial Fenders Two (2) Safety Chains Standard. Parking Wheel Screw action to raise and lower. Rear Stand Folding type.

Combination tail light and license plate holder furnished.

CHIPPING UNIT: Housing Steel Plate, welded construction. Feed Opening 10" x 16" Cutting Bar 7/8" x 2-7/8" x 16-1/2" - Special steel and heat-treated. Dia. of Cylinder 16" Length of Cylinder 16" Cylinder Material Flame cut steel plate. Dia. of Shaft 3" Bearings Two (2) 2-15/16" Dia., single row, piloted and flange mounted. R.P.M. of Cylinder 3000 Number of Knives Twelve (12) Knife Dimensions 4-1/4" x 2-3/8" x 1/2" Type of Knife Double-edged, special knife steel, heat- treated, and with positive lock arrangement.

Cylinder is dynamically and statically balanced. Flywheel and auxiliary blower not required.

POWER UNIT:

Ford Industrial Engines-Standard. Available in the following models:

Model "300", 6-cylinder. 149 B.H.P. with either torque converter, or heavy-duty springloaded type clutch. Engine is calibrated at 2800 RPM.

Model "330", 8-cylinder, 155 B.H.P. with heavy-duty springloaded type clutch. Engine is calibrated at 2800 RPM.

EQUIPMENT-STANDARD WITH ALL MODELS:

Swing-away Feed Chute. Telescoping discharge chute with deflector bonnet, adjustable for height, with 360 degrees rotation for complete control for discharging right, left, or into a truck. Hinged Cover for easy access to cylinder. Matched set of high capacity "V"-Belts. Covered Battery Box. Tool box containing Knife Wrench, Sharpening Stone, Grease Gun and Operating Manual. Mechanical Governor. Paint - Color (customer option) either highway yellow Kem-Lustral F65YQ317, orange Kem-Lustral F65E1, or green Kem-Lustral F65G7.

WEIGHTS - (APPROXIMATED): M & M MODEL NO. POWER UNIT & DRIVE WEIGHT M-7 "300" with Clutch 3675 lbs.

M-8 "300" with Torque 3725 lbs.

M-9 "330" with Clutch 3825 lbs.

OPTIONAL EQUIPMENT: Tachometer Directional Signals Brakes Solenoid Throttle Control Engine Hour Meter Flashing Warning Light Engine Side Panels Fuel Gauge

WARRANTY

Machine & Parts -- 1 year

Service -- Ninety Days

Purchased Parts -- Subject to Original Manufacturer's Warranty.

The Company reserves the right to change the list price of its products without notice. It shall have the right to discontinue the manufacture of any model or type of product, and change design or add improvements at any time without incurring any obligation to install the same on M & M products previously purchased.

For further information, contact your nearest M & M Chipper Dealer, or contact the factory direct.

MITTS & MERRILL will engineer units to suit your needs and requirements.

168 BC-12

MITTS & MERRILL CHIPPER SPECIFICATIONS

MODELS M2, M3, M4, M11, M12, M13

TRAILER UNITS -- SERIES 120 (12 INCHES)

TRAILER: Frame All tubular steel, welded construction. Draw Bar Pintle eye-standard. Ball and socket-optional. Axle Coil spring torsion type, 2" O.D., tubular construction - 61-1/2" track. Wheels Two (2) - Semi-drop center. Tires Two (2) - 15" 8-ply rated - commercial Fenders Two (2) Safety Chains Standard. Parking Wheel Screw action to raise and lower. Rear Stand Folding type.

Combination tail light and license plate holder furnished.

CHIPPING UNIT: Housing Steel plate, welded construction. Feed Opening 10" x 12" Cutting Bar 7/8" x 2-7/8" x 12-1/2" -- Special steel and heat-treated. Dia. of Cylinder 16" Length of Cylinder 12" Cylinder Material Flame cut steel plate. Dia. of Shaft 3" Bearings Two (2) 2-11/16" Dia., single row, piloted and flange mounted. R.P.M. of Cylinder 3000 Number of Knives Nine (9) Knife Dimensions 4-1/4" x 2-3/8" x 1/2" Type of Knife Double-edged, special knife steel, heat- treated, and with positive lock arrangement.

Cylinder is dynamically and statically balanced. Flywheel and auxiliary blower not required.

POWER UNIT:

Ford Industrial Engines-Standard. Available in the following models:

Model "172", 4-cylinder, 59 B.H.P. with torque converter. Engine is calibrated at 2500 RPM.

Model "240", 6-cylinder, 124 B.H.P. with either torque converter, or heavy-duty springloaded type clutch. Engine is calibrated at 2800 RPM.

Model "300", 6-cylinder, 149 B.H.P. with either torque converter, or heavy-duty springloaded type clutch. Engine is calibrated at 2800 RPM.

Model "330", 8-cylinder, 155 B.H.P. with heavy-duty springloaded type clutch. Engine is calibrated at 2800 RPM.

(Graphics omitted) Mitts & Merrill Brush Chipper

engineered for years of maintenance-free service

improved to do all jobs(Illegible Words)

[] telescoping discharge chute

The new telescoping discharge chute gives the operator maximum flexibility in getting jobs done easier and in less time. The chute is adjustable to various heights, and rotatable . . . a combination that means dump boxes can be filled quickly from corner to corner with minimum spill. An adjustable bonnet at the end of the chute also permits discharge to either side, or forward, providing complete freedom in cases such as road right-of-way maintenance where chips may be left on the ground.

[] swing-away feed chute

Knife removal and throat bar adjustments are made relatively easy by the swing-away feed chute. The cutting cylinder is completely exposed when the chute is moved to the side and the hinged cover is lifted. These two features are exclusive with Mitts & Merrill Brush Chippers.

[] staggered knife pattern

The staggered knife pattern, found only on Mitts & Merrill Brush Chippers, provides more cuts per revolution. This results in smoother, more efficient cutting action that reduces material by shaving action rather than the conventional chopping motion. The double-edged knives are securely held in place by a wedge-lock which can be easily disengaged for knife reversal.

[] More outstanding features

Safety-lock pin

The double-edged knives have a positive safety locking pin between the wedge block and the special tool steel knife. This safety feature prevents throw-out of knives not properly tightened.

Easy loading

The feed chute is low to the ground and designed to permit wide-angle loading of brush and free limbs. No pushing is required . . . the cylinder draws the material into the cutting chamber quickly and safely.

All-steel cylinder

The solid steel plate cylinder is supported by a heavy-duty flange mounted ball bearing assembly. The cylinder, rotating in an all-steel welded cutting chamber, has a built-in flywheel and blower arrangement, eliminating the need for any optional equipment for blowing material into the discharge chute.

Excellent roadability

The low profile, strong tubular frame and torsion spring axle assure better roadability over any type of terrain. The certified 100-pound weight at the trailer hitch reduces wear and tear on towing vehicle and adds to the over-all strength and rigidity of the equipment.

Over 70 years of experience . . .

Mitts & Merrill has over 70 years of experience in producing and improving wood reduction machinery. The equipment offered today by Mitts & Merrill is the highest quality, best performing . . . first choice of municipalities, public utilities, highway departments, tree surgeons and others who seek economy in equipment operation through many years of maintenance-free service. The Mitts & Merrill Brush Chipper is the standard by which all brush chippers are judged. You buy it with confidence.

TRAILER UNITS -- SERIES 120 (12 INCH) Total Approximate Pounds Shipping Model Engine Drive Chipping Capacity Weight M-2 Ford "172" Torque Converter Up to 6" Dia. Logs 3350 M-3 Ford "240" Clutch Up to 6" Dia. Logs 3480 M-4 Ford "240" Torque Converter Up to 6" Dia. Logs 3530 M-11 Ford "300" Clutch Up to 8" Dia. Logs 3500 M-12 Ford "300" Torque Converter Up to 8" Dia. Logs 3550 M-13 Ford "330" V8 Clutch Up to 8" Dia. Logs 3675

TRAILER UNITS -- SERIES 160 (16 INCH) Total Approximate Pounds Shipping Model Engine Drive Chipping Capacity Weight M-6 Ford "240" Torque Converter Up to 6" Dia. Logs 3700 M-7 Ford "300" Clutch Up to 8" Dia. Logs 3675 M-8 Ford "300" Torque Converter Up to 8" Dia. Logs 3725 M-9 Ford "330" V8 Clutch Up to 8" Dia. Logs 3825

All trailers are equipped with tires, fenders, taillight, license plate holder, rear support jack, covered tool box, covered battery box, choice of ball or pintle eye hitch on telescopic draw bar, and adjustable front landing wheel. Machines are painted with prime coating plus hi-gloss enamel with color choice optional.

WARRANTY

Parts -- One year; Service Adjustments -- 90 days: Purchased parts are subject to original manufacturers guarantees.

Mitts & Merrill reserves the right to discontinue the manufacturer of any model, to redesign and to add improvements to existing models without incurring any obligation to install same on products previously furnished.

. . . then note how many features are exclusive with Mitts & Merrill Brush Chippers Mitts & Merrill General Brush Chipper Specifications Specifications Trailer frame All tubular steel, welded construction Suspension * Coil spring, torsion type Feed chute * Swing-away type Cutting chamber cover Hinged type Cylinder * 16-inch diameter, dynamically balanced with staggered knife design Cylinder material Flame cut steel plate RPM of cylinder 2,800 to 3,000 Type of knife * Self-adjusting, double-edged, positive-lock type Diameter of shaft 3 inches Feed opening * 10-inch by 12-inch, or 10-inch by 16-inch Bearings 2-15/16 inch diameter, single row, piloted and flange mounted Flywheel * Unnecessary Power Ford 172, 240, 300 or 330 cubic-inch displacement Drive * Torque converter or clutch Blower Standard equipment